Given the task definition, example input & output, solve the new input case.
In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.
Example: story: It was bedtime at our house. Two of the three kids hit the pillow and fall asleep. The third is a trouble maker. For two hours he continues to get out of bed and want to play. Finally he becomes tired and falls asleep.
 selected sentence: Finally he becomes tired and falls asleep.
Output: A kid wants to play before sleep >Causes/Enables> A kid eventually falls asleep
The selected sentence is about a kid falling sleep, the answer correctly identifices an event causing the sentence to happen.

New input case for you: story: Gus attempted to tie his shoes. He gave a final pull and the laces did not get taunt. He looked at his work to understand what happened. Gus undid his laced and gave it another try. He pulled again and the laces got taunt.
 selected sentence: Gus attempted to tie his shoes.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Gus puts on his shoes >Causes/Enables> Gus ties his shoes