Sentence 1: Ben waited and waited for his friend Sal to show up. 
 Sentence 3: Finally half an hour after Sal was suppose to arrive he called him 
 Sentence 4:  Sal was waiting at a different restaurant 
 Sentence 5:  Ben had made the mistake, so he drove to the other place to met Sal 
 Given Sentence 2: She hadn't seen any animals and was beginning to feel sick.