Meaning representation: give_opinion(name[Portal 2], developer[Valve Corporation], rating[excellent], platforms[PlayStation])
Utterance: Portal 2 is an amazing game. Valve Corporation is definitely one of my favorite developers, and another plus is it's on my favorite system, the PlayStation.
Utterance: Portal 2 is my dream game. Valve Corporation is my favorite developer and the PlayStation is my favorite system, so combining the two is a match made in heaven.
Utterance: Valve Corporation's Portal 2 is a fantastic game, played great with friends on PlayStation.