story: Darrel was helping his brother with his homework. His brother didn't understand what Darrel was showing him. They decided to take a break. Darrel tried to explain the problem again. His brother understood much better after he had rested.
 selected sentence: His brother understood much better after he had rested.
Darrel's brother takes a break from doing his homework >Causes/Enables> His brother understands much better after he rested