Sentence 1: William was a young boy on his way to school. 
 Sentence 3: His teacher told them they will be having a surprise pizza party 
 Sentence 4:  William and his classmates went outside to play on the playground 
 Sentence 5:  When they came back inside, they had pizza and soda waiting for them 
 Given Sentence 2: He was only 12 and he was sure his dad would win.