Sentence 1: My two-year-old son wanted to play in the big kid area. 
 Sentence 3: We finally relented and let him go play in the big kid area 
 Sentence 4:  While he was there, a big kid accidentally ran over him 
 Sentence 5:  My son ended up crying again 
 Given Sentence 2: It was getting late so she was trying to hurry.