Sentence1: One year, Matt was training for a half marathon. Sentence2: Near the time of the race, he slipped on a run and damaged his knee. Sentence3: Matt missed the race and required an extensive rehab. Sentence4: As soon as he could, Matt was back to training. 
 (A) Matt trained hard to return to being a pianist. (B) His training paid off at a marathon later that year.
A