Who is they?
The Roman legion attacked the Persians because they had invaded.

OPTIONS:
- The Roman legion
- the Persians

A:
the Persians

Who is they?
The Philadelphia Eagles lost to the St. Louis Rams, but it was because they were tired from traveling to the game.

OPTIONS:
- Philadelphia Eagles
- St. Louis Rams

A:
Philadelphia Eagles

Who is they?
The group grew tired of making these sentences because they are lazy.

OPTIONS:
- The group
- these sentences

A:
The group