Answer the question at the end by quoting:

Claudius Ptolemy (; Greek: Klaudios Ptolemaios, Klaudios Ptolemaios [klawdios ptoleme:os]; Latin: Claudius Ptolemaeus; c. AD 100 - c. 170) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in the city of Alexandria in the Roman province of Egypt, wrote in Koine Greek, and held Roman citizenship. The 14th-century astronomer Theodore Meliteniotes gave his birthplace as the prominent Greek city Ptolemais Hermiou
Ptolemy's Almagest is the only surviving comprehensive ancient treatise on astronomy. Babylonian astronomers had developed arithmetical techniques for calculating astronomical phenomena; Greek astronomers such as Hipparchus had produced geometric models for calculating celestial motions. Ptolemy, however, claimed to have derived his geometrical models from selected astronomical observations by his predecessors spanning more than 800 years, though astronomers have for centuries suspected that his models' parameters were adopted independently of observations. Ptolemy presented his astronomical models in convenient tables, which could be used to compute the future or past position of the planets. The Almagest also contains a star catalogue, which is a version of a catalogue created by Hipparchus. Its list of forty-eight constellations is ancestral to the modern system of constellations, but unlike the modern system they did not cover the whole sky (only the sky Hipparchus could see). Across Europe, the Middle East and North Africa in the Medieval period, it was the authoritative text on astronomy, with its author becoming an almost mythical figure, called Ptolemy, King of Alexandria. The Almagest was preserved, like most of extant Classical Greek science, in Arabic manuscripts (hence its familiar name). Because of its reputation, it was widely sought and was translated twice into Latin in the 12th century, once in Sicily and again in Spain. Ptolemy's model, like those of his predecessors, was geocentric and was almost universally accepted until the appearance of simpler heliocentric models during the scientific revolution.  His Planetary Hypotheses went beyond the mathematical model of the Almagest to present a physical realization of the universe as a set of nested spheres, in which he used the epicycles of his planetary model to compute the dimensions of the universe. He estimated the Sun was at an average distance of 1,210 Earth radii, while the radius of the sphere of the fixed stars was 20,000 times the radius of the Earth.  Ptolemy presented a useful tool for astronomical calculations in his Handy Tables, which tabulated all the data needed to compute the positions of the Sun, Moon and planets, the rising and setting of the stars, and eclipses of the Sun and Moon. Ptolemy's Handy Tables provided the model for later astronomical tables or zijes. In the Phaseis (Risings of the Fixed Stars), Ptolemy gave a parapegma, a star calendar or almanac, based on the hands and disappearances of stars over the course of the solar year.

What did he know?

Ptolemy presented his astronomical models in convenient tables, which could be used to compute the future or past position of the planets.

IN: Dame Helen Lydia Mirren,  (nee Mironoff; born 26 July 1945) is an English actor. Mirren began her acting career with the Royal Shakespeare Company in 1967, and is one of the few performers who have achieved the Triple Crown of Acting. She won the Academy Award for Best Actress in 2007 for her performance as Queen Elizabeth II in The Queen and received the Olivier Award for Best Actress and Tony Award for Best Actress in a Play for the same role in The Audience. Mirren's other Academy Award nominations include The Madness of King George (1994), Gosford Park (2001) and The Last Station (2009).

Mirren's first film of the 2000s was Joel Hershman's Greenfingers (2000), a comedy based on the true story about the award-winning prisoners of HMP Leyhill, a minimum-security prison. Mirren portrayed a devoted plantswoman in the film, who coaches a team of prison gardeners, led by Clive Owen, to victory at a prestigious flower show. The project garnered largely lukewarm reviews from critics, who felt that it added "nothing new to this already saturated genre" of British feel-good films. The same year, she began work on the mystery film The Pledge, actor Sean Penn's second directorial effort, in which she played a child psychologist. A critical success, the ensemble film tanked at the box office. Also the year, she filmed the American-Icelandic satirical drama No Such Thing opposite Sarah Polley. Directed by Hal Hartley, Mirren portrayed a soulless television producer in the film, who strives for sensationalistic stories. It was largely panned by critics.  Her biggest critical and commercial success, released in 2001, became Robert Altman's all-star ensemble mystery film Gosford Park. An homage to writer Agatha Christie's whodunit style, the story follows a party of wealthy Britons and an American, and their servants, who gather for a shooting weekend at an English country house, resulting in an unexpected murder. Widely acclaimed by critics, it received multiple awards and nominations, including a second Academy Award nomination and first Screen Actors Guild Award win for Mirren's portrayal of the sternly devoted head servant Mrs. Wilson. Mirren's last film that year was Fred Schepisi's dramedy film Last Orders opposite Michael Caine and Bob Hoskins.  In 2003, Mirren starred in Nigel Cole's comedy Calendar Girls, inspired by the true story of a group of Yorkshire women who produced a nude calendar to raise money for Leukaemia Research under the auspices of the Women's Institutes. Mirren was initially resistant to join the project, at first dismissing it as another middling British picture, but rethought her decision upon learning of the casting of co-star Julie Walters. The film garnered generally positive reactions by film critics, and grossed $96,000,000 worldwide. In addition, the picture earned Satellite, Golden Globe, and European Film Award nominations for Mirren. Her other film that year was the Showtime television film The Roman Spring of Mrs. Stone opposite Olivier Martinez, and Anne Bancroft, based on the 1950 novel of the same title by Tennessee Williams.

What was Greenfingers about?

OUT:
a comedy based on the true story about the award-winning prisoners of HMP Leyhill, a minimum-security prison.