In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: One story tells of his encounter with the nymph Carna, who beguiled suitors into a cave but ran away after promising to make love to them. However, this god caught her, after which she granted him her favors, for which he gave her the power to chase away vampires. His son Tiberinus gave the river Tiber its name after drowning in it. After Tarpeia betrayed the Romans to the Sabines, he saved the Romans by flooding the gates; appropriate, since he was the god of gates and doors, as well as beginnings and endings. FTP, who was this Roman god best known for having two faces
A:
Social Science