Sentence 1: Amy and a co-worker were on their lunch break. 
 Sentence 3: It was Amy's first time trying frozen yogurt 
 Sentence 4:  She was surprised how much it was like Ice Cream 
 Sentence 5:  Amy told all her friends to try it when they were downtown 
 Given Sentence 2: He saw his friend emerge from a behind a tree to greet him.