Conversation so far:
When did the incident occur with Tank Man?
on June 5, 1989
What happened during the incident with Tank Man on June 5, 1989?
an unidentified Chinese man stood in front of a column of tanks leaving Tiananmen Square

Question: Did the tanks stop?
Self-contained rewrite: Did the tanks stop for the unidentified Chinese man that stood in front of the column of tanks leaving Tianamen Square?