story: Pam's kids were in school. She had gone shopping. Pam was still in town when the kids got off of school. Pam asked her sister to pick the kids up. Pam's sister watched the kids until she got home.
 selected sentence: Pam was still in town when the kids got off of school.
Pam is still in town >Causes/Enables> Pam asks her sister to pick up the kids