Sentence 1: Harry had been out walking for miles. 
 Sentence 3: He was thirsty but ran out of water a while back 
 Sentence 4:  There was a puddle near by 
 Sentence 5:  He drank from the puddle 
 Option 1: He got lost in the woods and didn't know it. 
 Option 2: He drank from his full canteen.