Conversation so far:
Did Indurain have a victory in 1996?
He won the individual time trial in the 1996 Olympic Games in Atlanta, where professionals competed for the first time.
Did Migual Indurain win any other races in 1996 beside the individual time trial in the 1996 Olympic Games?
He also won the Critérium du Dauphiné Libéré in 1996.
Did Migual Indurain have any losses during the 1996 professional cycling season?
Induráin aimed for a sixth victory in the 1996 Tour, but suffered from the beginning. He came seventh in the prologue.

Question: Why did he suffer?
Self-contained rewrite: Why did Migual Indurain suffer during the 1996 Tour de France?