Sentence 1: The mother decided she would take her children to the park. 
 Sentence 3: At night they gathered for a talk about the turtles 
 Sentence 4:  The ranger got a call about a turtle on the beach 
 Sentence 5:  They all raced together to watch the turtle lay eggs on the beach 
 Option 1: They participated in a program about sea turtles. 
 Option 2: They didn't participate in a program about sea turtles.