story: Joshua was nervous to go to preschool today. He was used to staying at home with his grandma. When mom dropped him off she told him to have a good day. Joshua looked around and saw many other boys and girls. He made new friends as was excited to come back again.
 selected sentence: When mom dropped him off she told him to have a good day.
Joshua's mom drops him off at preschool >Causes/Enables> Joshua sees many other boys and girls