Conversation so far:
What accomplishment was Nadia Comaneci the first gymnast to achieve?
During the team compulsory portion of the competition, she was awarded the first perfect 10 in Olympic gymnastics for her routine on the uneven bars
How many perfect 10.0's did Nadia Comaneci receive?
at the same Games (1976 Summer Olympics in Montreal), she received six more perfect 10s en route to winning three gold medals.

Question: In what city did Nadia Comaneci earn the first perfect 10.0?
Self-contained rewrite: In what city did Nadia Comaneci earn the first perfect 10.0?