Sentence 1: Jeff's parents are going out of town this weekend. 
 Sentence 3: Jeff's parents told him to behave while they were gone 
 Sentence 4:  Jeff's friends broke furniture and shattered plates during the party 
 Sentence 5:  Jeff's parents grounded him for year 
 Option 1: He is spending the night at his Nana's. 
 Option 2: He invited all of his friends to a party he's throwing Saturday night.