What does "it’s the seat" mean in English for Spanish?

In English for Spanish, "it’s the seat" means:

es la sede

Listen to "it’s the seat": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 2, Scene 9