Yesterday night, Pam and Linda went to Paul’s house.  There were a lot of people there.  He is fifteen years now.  Pam gave him a chess set.  Linda bought a small robot of a dinosaur for him.  When he saw his presents from his friends, he was glad.  There were a lot of delicious food at the party.  Pam and Linda arrived home at a quarter to eleven.  They were happy.

Who is Paul?