How do you get trinity limit in Kingdom Hearts 2?

The Yellow Trinity is obtained when you complete the Hercules Cup. Here are the locations for the four Yellow Trinities: 1. Traverse Town - behind Magician's Study - near stack of crates

2. Olympus Coliseum - Lobby - near large stone (reveals Keyhole)

3. Agrabah - Cave of Wonders - Hall - near statue

4. Neverland - Ship's Hold - near door on left side