Sentence 1: Haley heard a dog barking outside her window. 
 Sentence 3: The dog ran into her house and laid down on the sofa 
 Sentence 4:  Haley asked around to see if anyone owned the dog 
 Sentence 5:  Haley decided to adopt the dog when no one claimed him 
 Given Sentence 2: She did not own a dog, and went outside to investigate the noise.