story: Toby went outside to walk his dog. His neighbor was outside getting into her car. Suddenly, a man rushed by and grabbed her purse. Toby yelled at his dog to get the man. The dog ran after the man who then dropped the purse.
 selected sentence: The dog ran after the man who then dropped the purse.
The dog want(s) to be obedient >Motivates> The dog runs after the man