Background: Gulbuddin Hekmatyar was born in 1947 in Imam Sahib District of the Kunduz province, northern Afghanistan, a member of the Kharoti tribe of the Ghilji Pashtun. His father, Ghulam Qader, who migrated to Kunduz, is originally from the center of Ghazni province. Afghan businessman and Kharoti tribal leader Gholam Serwar Nasher deemed Hekmatyar to be a bright young man and sent him to the Mahtab Qala military academy in 1968, but he was expelled due to his political views two years later. From 1970 to 1972, Hekmatyar attended Kabul University's engineering department.
Context: In May 2008, the Jamestown Foundation reported that after being "sidelined from Afghan politics" since the mid-1990s, Gulbuddin's HIG group has "recently reemerged as an aggressive militant group, claiming responsibility for many bloody attacks against Coalition forces [at the time, primarily the International Security Assistance Force and the administration of President Hamid Karzai." The re-emergence of this "experienced guerrilla strategist" comes at a propitious time for insurgency, following the killing of Taliban commander Mullah Dadullah, when some elements of the Taliban were becoming "disorganized and frustrated." HIG has claimed responsibility for and is thought to have at least assisted in a 27 April 2008 attempt on the life of President Karzai in Kabul that killed three Afghan citizens, including a member of parliament. Other attacks it is thought to be responsible for include the 2 January 2008 shooting down in the Laghman province of a helicopter containing foreign troops; the shooting and forcing down of a U.S. military helicopter in the Sarubi district of Kabul on 22 January; and blowing up a Kabul police vehicle in March 2008, killing 10 soldiers.  In interviews he has demanded "all foreign forces to leave immediately unconditionally." Offers by President Hamid Karzai to open talks with "opponents of the government" and hints that they would be offered official posts "such as deputy minister or head of department", are thought to be directed at Hekmatyar. It was reported in 2008 that Hekmatyar lived in an unknown location in southeastern Afghanistan, close to the Pakistani border. In 2008, he denied any links with the Taliban or al-Qaeda and was even considered for Prime Minister. Hekmatyar is now believed to shuttle between hideouts in Pakistan's mountainous tribal areas and in northeast Afghanistan.  In January 2010, he was still considered as one of the three main leaders of the Afghan insurgency. By then, he held out the possibility of negotiations with President Karzai and outlined a roadmap for political reconciliation. This contrasted with the views of Taliban leader Mullah Omar and allied insurgent chief Sirajuddin Haqqani, who refuse any talks with Kabul as long as foreign troops remain in the country, Hekmatyar appeared less reluctant.
Question: How was Gulbuddin Hekmatyar involved in it?
Answer: at least assisted in a 27 April 2008 attempt on the life of President Karzai

Problem: Background: Expose is an American Latin freestyle vocal group. Primarily consisting of lead vocalists Jeanette Jurado, Ann Curless, and Gioia Bruno, the group achieved much of their success between 1984 and 1993, becoming the first group to have four top ten hits on the Billboard Hot 100 chart from its debut album, including the 1988 #1 hit "Seasons Change". In March 2015, Billboard magazine named the group the eighth most-successful girl group of all-time. The group was popular in dance clubs, mainstream Top 40 and adult contemporary charts in the United States.
Context: During the recording of the group's first studio album Exposure, the personnel of the group changed. Reports vary based on the source. According to People magazine, one of the original singers quit while two of the girls were fired midway through the recording of the first album, but according to Billboard, all three were fired. Arista records felt that the three original singers lacked star potential. Martinee states that he made the decision himself to replace the three girls, while Miller maintains it was all their choice, and Jurado confirms that Lorenzo wanted to leave. Shortly thereafter, Casanas pursued a solo career and Lorenzo pursued other ambitions; they were replaced by Jeanette Jurado and Gioia Bruno. Miller began a solo career; she was replaced by Ann Curless.  Lorenzo returned to the dance charts with the Vendetta Records releases "I Wanna Know" in 1988, and "Stop Me if I Fall in Love" in 1990, while Laurie Miller released the 12" single "Parallels" on Atlantic Records and a second single "Love is a Natural Magical Thing" on Meet Me In Miami Records. Laurie evolved into a headline performer frequently showcasing her talents on cruises with a more intimate jazz style, and formed her own entertainment company called Xica productions.  Casanas later resurfaced as a solo artist (Sandee) and released a solo album, Only Time Will Tell, which garnered the club hits "You're The One", "Love Desire", and the Clivilles & Cole-produced bassline-heavy hit "Notice Me". She continued to tour actively in dance clubs and freestyle shows, until her death on December 15, 2008, of a seizure at the age of 46. All three original members: Casanas, Lorenzo and Miller later contributed vocals on songs on the Miami group Will to Power's eponymous 1988 debut album. Gioia Bruno also provided lead vocals on Will to Power's 2004 album, Spirit Warrior.
Question: How did it change?
Answer:
According to People magazine, one of the original singers quit while two of the girls were fired midway through the recording of the first album,