story: My family went to the water park since today was a holiday. My brother and I were the first people in line for the lazy river. We spent a couple of minutes floating around the water. After we got out, we went towards the huge slide. Since the line in front of the slide was large, we waited for a while.
 selected sentence: Since the line in front of the slide was large, we waited for a while.
My brother and I wait to reach the slide >Causes/Enables> My brother and I reach the slide