Sentence 1: Sue kept calling her dog but she was nowhere to be found. 
 Sentence 3: As she got further from the house, she heard a faint barking 
 Sentence 4:  The barking got clearer as she got closer to the creek 
 Sentence 5:  The barking was coming from under the ice where her dog had fallen 
 Given Sentence 2: She walked along the frozen creek calling the dog's name.