story: Ronnie decided to make a surprise visit with his mom. They live about four hours apart. He filled his gas tank and his cooler for the trip. He passed the time by listening to his radio. Before he knew it he was already giving his mom a big hug.
 selected sentence: Before he knew it he was already giving his mom a big hug.
Ronnie decides to visit his mom >Causes/Enables> He gives his mom a big hug