Sentence 1: Bob went to the gas station to fill his car. 
 Sentence 3: His car began to stutter when he tried to start it up 
 Sentence 4:  His car wouldn't move no matter what 
 Sentence 5:  Bob had to call a mechanic to get his fuel pump cleaned out 
 Option 1: He accidentally put diesel instead of gasoline into his car. 
 Option 2: He accidentally put premium instead of regular gasoline into his car.