Sentence 1: John had three horses. 
 Sentence 3: One day he found a stray Kitten in the stable 
 Sentence 4:  He took the kitten inside his house and raised it 
 Sentence 5:  He called the kitten stable 
 Option 1: They all stayed in stables behind his house but was allergic to cats. 
 Option 2: They all stayed in stables behind his house.