Sentence 1: Billy had a favorite teddy bear when he was a kid. 
 Sentence 3: When his mother passed away he went to her house to clean it up 
 Sentence 4:  He found a box in the attic that held his old teddy bear 
 Sentence 5:  He took it home to give to his daughter 
 Given Sentence 2: Over the years he lost track of it and even forgot about it.