Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: Riley is a father and a surgeon. Riley promised children he would take them to the amusement park. But Riley got a call from work. Kai took Riley's kids to the park.

Question: Why did Kai do this?
help Riley
Riley was called away from the park by work.