Sentence1: Marty and his son, John, went into the convenience store. Sentence2: Marty gave the cashier twenty dollars to fill up his tank. Sentence3: Outside Marty pumped his gas while John washed the windows. Sentence4: They hit the road heading to John's grandpa's. Sentence5: John snacked on his stolen candy bar in the back.
Marty, John's grandpa, John