story: Alison hates turtles. Allison's class went on a field trip to a zoo. They saw many turtles. Alison almost threw up from looking at the turtles. She was very glad when they left the zoo.
 selected sentence: She was very glad when they left the zoo.
Alison sees many turtles at the zoo >Causes/Enables> Alison is glad when they leave the zooe