Sentence 1: Al and Ann, twins, loved their dad very much. 
 Sentence 3: The twins had a small home and agreed a nursing home would be best 
 Sentence 4:  Then Al remembered how their dad had raised them, alone, for 18 years 
 Sentence 5:  Shamed, he and Ann agreed that their dad should move in with them 
 Given Sentence 2: He ordered some food.