Sentence 1: A man I work with got suspicious that his wife is cheating on him. 
 Sentence 3: The PI followed her around for three weeks and then reported 
 Sentence 4:  All the pictures he took of the guy's wife were of her playing tennis 
 Sentence 5:  That's what she told her husband she was doing every afternoon 
 Given Sentence 2: Their mom took them to the park.