Sentence 1: Dan and his family were watching football. 
 Sentence 3: They bet the loser would clean up after the party 
 Sentence 4:  It was Dan's house but he didn't want to have to clean up 
 Sentence 5:  Dan mocked his brother for an hour as his brother cleaned up 
 Option 1: They were at Dan's parents' house. 
 Option 2: Dan bet his brother the Giants would beat the Vikings.