Conversation so far:
what mistake did Peter Shilton make against poland?
Shilton needed to deal with the shot but dived late, leaving the shot too close to his body, and Poland scored.
When was that?
CANNOTANSWER.

Question: what game was the game he made that mistake?
Self-contained rewrite: What game was the game where Peter Shilton dived late which allowed Poland to score?