Task: Question Generation
Input (English): In 1173 John's elder brothers, backed by Eleanor, rose in revolt against Henry in the short-lived rebellion of 1173 to 1174. Growing irritated with his subordinate position to Henry II and increasingly worried that John might be given additional lands and castles at his expense, Henry the Young King travelled to Paris and allied himself with Louis VII. Eleanor, irritated by her husband's persistent interference in Aquitaine, encouraged Richard and Geoffrey to join their brother Henry in Paris. Henry II triumphed over the coalition of his sons, but was generous to them in the peace settlement agreed at Montlouis. Henry the Young King was allowed to travel widely in Europe with his own household of knights, Richard was given Aquitaine back, and Geoffrey was allowed to return to Brittany; only Eleanor was imprisoned for her role in the revolt.
Output (English): Who was imprisoned?