Passage: Piqué was a member of the Spain under-19 side that won the 2006 UEFA European Under-19 Championship in Poland. In a 2–1 final win against Scotland, Piqué put in a strong performance in defence, hitting the crossbar with a header, and also providing his team's second goal for striker Alberto Bueno.Subsequently, he played in the 2007 FIFA U-20 World Cup, starting all six of Spain's matches and scoring a goal in the team's come-from-behind 4–2 victory over Brazil in the round of 16. However, Piqué missed the deciding penalty in the shoot-out against the Czech Republic and Spain were eliminated at the quarter-final stage.

Question: pique was known as a member of what organization?
Spain under-19