You will be given a definition of a task first, then some input of the task.
In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

Sentence 1:Now they must cross a narrow beam while avoiding being knocked off by a wrecking ball that is swung at them . Sentence 2:Then , to cross a gap in the course , they have to step onto a spinning plank and leap off the opposite side to carry on .
Output:
then