Sentence 1: Dan followed the rainbow over the hills and roads. 
 Sentence 3: It was always just right ahead of him 
 Sentence 4:  Dan finally got a splendid idea 
 Sentence 5:  He got out his mobile and took a picture of the rainbow 
 Option 1: He reached the end of the rainbow and found a pot of gold!. 
 Option 2: No matter how close he got he couldn't find the end.