Task: Sentence Ordering
Input (English): Sentence1: What had been pressed between the pages was a four-leafed clover! Sentence2: Noah bent curiously and picked it up, eyes widening. Sentence3: He took it home and began to read it. Sentence4: As he did, something fell out of the pages. Sentence5: Noah bought an old book at the thrift store.
Output (English): 54231