Detailed Instructions: In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Q: Sentence1: Erick was a hiker who loved going up to the mountains. Sentence2: On one of his trips, he took his friend Mark who had never hiked. Sentence3: Mark had trouble climbing the rocks at first. Sentence4: Mark learned to climb well and started to like hiking.
A:
They started hiking together on weekends.