story: Early on the 4th of July, John and Bob could not wait for fireworks! John and Bob decided they would go to the park to get a spot to watch. They waited there all day to see the fireworks go off that night. John and Bob packed a picnic and became very close that day. After the fireworks, they went home and smiled at the wonderful day.
 selected sentence: John and Bob packed a picnic and became very close that day.
John and Bob want(s) friendship >Motivates> John and Bob become close.