story: There was a boy who played out in the mud. His mom called him inside and told him to clean up. She had dinner ready and wanted to eat. He went upstairs and washed off. She was glad he cleaned up because his grandparents were in town.
 selected sentence: She was glad he cleaned up because his grandparents were in town.
The boy goes upstairs and washes off >Causes/Enables> The boy's mom is glad he cleaned up