Question: Psychohistory is a fictional science in which Isaac Asimov science fiction book series which combines history, sociology and mathematical statistics to make predictions about the future behaviour of very large groups of people and most notably described in his trilogy series which won him the Hugo award and which reference other works by the author including 'Robot' and 'Empire'?
Sentence (from "Foundation series"): Asimov began adding to the series in 1981, with two sequels: "Foundation's Edge", "Foundation and Earth", and two prequels: "Prelude to Foundation", "Forward the Foundation".
Relevant evidence: No