user: Ed and his sister, Lilly, are in a room. They have two toys: a truck and a robot. They play with these toys until Ed accidentally breaks the truck. Disappointed, he leaves the room to look for his mom. In his absence, Lilly repairs the truck, but inadvertently breaks the robot. Subsequently, she too leaves the room. Ed finds his mom. Ed's sister calls Ed and tells him that she repaired the truck, but inadvertently broke the robot. Ed believes his sister. Which toy will need to be repaired?

assistant: Ed will tell his mom that they need to repair the robot.