Conversation so far:
Did Sergio Agüero play on any youth teams?
Sergio Agüero was selected for the Argentina U17 team.
How did Sergio Agüero's team do during those youth U17 championships?
Sergio Agüero represented Argentina at two FIFA World Youth Championships, winning back-to-back world titles (2005, 2007)

Question: Was that the first time a team did that?
Self-contained rewrite: Was that the first time a team won the FIFA World Youth Championships back to back?