Some context: Anthony Neil Wedgwood Benn (3 April 1925 - 14 March 2014), originally known as Anthony Wedgwood Benn, but later as Tony Benn, was a British politician, writer, and diarist. He was a Member of Parliament (MP) for 47 years between the 1950 and 2001 general elections and a Cabinet minister in the Labour governments of Harold Wilson and James Callaghan in the 1960s and 1970s. Originally a moderate, he was identified as being on the party's hard left from the early 1980s, and was widely seen as a key proponent of democratic socialism within the party. Benn inherited a peerage on his father's death (as 2nd Viscount Stansgate), which prevented his continuing as an MP.
In 1997, the Labour Party under Tony Blair won the election. Despite later calling Labour under Tony Blair "the idea of a Conservative group who had taken over Labour" and saying "[Blair] set up a new political party, New Labour", Benn's political diaries Free at Last show that Benn was initially somewhat sympathetic to Blair, welcoming a change of government. Benn supported the introduction of the national minimum wage, and welcomed the progress towards peace and security in Northern Ireland (particularly under Mo Mowlam). He was supportive of the extra public money given to public services in the New Labour years but believed it to be under the guise of privatisation. Overall, his concluding judgement on New Labour is highly critical; he describes its evolution as a way of retaining office by abandoning socialism and distancing the party from the trade union movement, adopting a presidentialist style of politics, overriding the concept of the collective ministerial responsibility by reducing the power of the Cabinet, eliminated any effective influence from the annual conference of the Labour Party and "hinged its foreign policy on support for one of the worst presidents in US history".  Benn strongly objected to the "immoral" bombing of Iraq in December 1998, saying: "Aren't Arabs terrified? Aren't Iraqis terrified? Don't Arab and Iraqi women weep when their children die? Does bombing strengthen their determination? ... Every Member of Parliament tonight who votes for the government motion will be consciously and deliberately accepting the responsibility for the deaths of innocent people if the war begins, as I fear it will."  Several months prior to his retirement, Benn was a signatory to a letter, alongside Niki Adams (Legal Action for Women), Ian Macdonald QC, Gareth Peirce, and other legal professionals, that was published in The Guardian newspaper on 22 February 2001 "condemning" raids of more than 50 brothels in the central London area of Soho. At the time, a police spokesman said: "As far as we know, this is the biggest simultaneous crackdown on brothels and prostitution in this country in recent times", the arrest of 28 people in an operation that involved around 110 police officers. The letter read:  In the name of "protecting" women from trafficking, about 40 women, including a woman from Iraq, were arrested, detained and in some cases summarily removed from Britain. If any of these women have been trafficked ... they deserve protection and resources, not punishment by expulsion. ... Having forced women into destitution, the government first criminalised those who begged. Now it is trying to use prostitution as a way to make deportation of the vulnerable more acceptable. We will not allow such injustice to go unchallenged.
what is a signatory?
A: 

Some context: Jean-Christophe Lafaille (31 March 1965 - 27 January 2006 [presumed]) was a French mountaineer noted for a number of difficult ascents in the Alps and Himalaya, and for what has been described as "perhaps the finest self-rescue ever performed in the Himalaya", when he was forced to descend the mile-high south face of Annapurna alone with a broken arm, after his climbing partner had been killed in a fall. He climbed eleven of the fourteen eight-thousand-metre peaks, many of them alone or by previously unclimbed routes, but disappeared during a solo attempt to make the first winter ascent of Makalu, the world's fifth highest mountain.
On the strength of his climbs in the Alps, Lafaille was invited on an expedition to Annapurna by Pierre Beghin, one of the leading French climbers of the day. The pair attempted the mountain's vast South Face following the monsoon season in October 1992 in Alpine style, with no Sherpa support, pre-stocked campsites or fixed ropes on the upper mountain. They had reached a height of 7,400 metres when bad weather forced them to descend. The pair made a series of abseils down the face, but due to their lightweight approach they had little protective equipment and were often forced to abseil from a single anchor to conserve equipment. On the fourth or fifth abseil, Beghin fell to his death when the single cam he was using as an anchor became dislodged from the rock. Beghin had been carrying most of the pair's technical equipment, including all the ropes, and Lafaille was left alone on the face, a vertical mile above safety.  With great difficulty, Lafaille managed to climb down the 75 degree face to the pair's last bivouac site, where he found 20 metres of thin rope, allowing him to make short abseils down some of the hardest parts. With no technical equipment to use as anchors he was forced to entrust his weight to tent pegs or, on one occasion, a plastic bottle. He finally reached what should have been the relative safety of the top of a fixed rope which he and Beghin had installed on a steep rock band, but almost immediately he was struck by a falling rock, which broke his right arm. Disabled and helpless, he lay on a ledge for two days in the hope that other climbers would rescue him. However, while there was a Slovenian team attempting a route on a different part of the South Face, they judged that a rescue attempt would be too dangerous to undertake, so help never came. The cruellest thing about the ordeal, Lafaille said, was being able to see life in the valley below, and by night, the flashbulbs of trekkers' cameras. In spite of this, he later agreed that the Slovenians had made the right decision in not trying to save him.  Eventually, with all hope of rescue gone, Lafaille resolved to continue down alone. He initially tried to continue abseiling, but unable to control the rope with only one hand and his teeth he reverted to downclimbing one-handed, and was utterly exhausted when he reached the Slovenian team's base camp. By that time the climbers at the base of the mountain had given up hope for him, and his first wife, Veronique, had already been told that he had died. Reinhold Messner later said that the survival instinct he showed was of the sort which defines the best mountaineers.
how long did it take him
A:
exhausted when he reached the Slovenian team's base camp. By that time the climbers at the base of the mountain had given up hope for him, and his first wife,