context: When I was younger, my mom wanted to make sure I would be safe around water.  She took me to the swimming pool to get better at it.  One day, we went to the swimming pool and brought our towels.  We got in the car and drove a few minutes to get there.  Sometimes, I would get bored when my siblings would swim, so I brought the book The Lord of the Rings with me to read if I was bored.  We made it to the pool and they stamped our hands when we arrived.  I went to sit down by the grass hill until it was my turn for a lesson.  While I sat there, I read a book. Then it was my turn to get in, so I put my book down and got into the water.  The teacher taught me and then I got out of the pool.
question: How did they get to the pool?
reference: their mom drove them
candidate: They drove.