story: Tom had been asking his parents for a cat for weeks. Finally, his parents told him they could get one kitten. Tom and his parents found a cat online and picked it up. When they brought it back, Tom took a nap with it. When Tom woke up, the cat was nowhere to be found anywhere.
 selected sentence: When Tom woke up, the cat was nowhere to be found anywhere.
Tom's cat is nowhere to be found when Tom wakes up >Causes> Tom feel(s) sad