Meaning representation: recommend(name[Portal 2], genres[platformer, puzzle, shooter], player_perspective[first person])
Utterance: Among first person puzzle platformer shooters, Portal 2 is a complete classic. Do you know about it?
Utterance: A good first person shooter with both puzzle and platforming elements is Portal 2, have you played it before?
Utterance: I know you're into the platformer puzzle shooter genre and like first person titles. Have you played Portal 2?