Task: Sentence Ordering
Input (English): Sentence1: Hector notices that only one ear of his headphones work. Sentence2: Hector is happy that both ears work. Sentence3: Finally he finds a good pair of headphones that he can afford. Sentence4: He buys them and immediately starts listening to music. Sentence5: He wants to get a new pair so he can listen to music.
Output (English): 15342