Write an effective, impartial "lead" sentence about the following news item:

Question

anonymous · Answer

Two small children were playing at the park. When their babysitter looked over, she noticed that the little girl had a cut on her arm and the little boy had a bruise on his leg. Maria Lopez, 6, said that her brother gave her the cut when he threw a rock at her. Juan Lopez, 4, said that his sister gave him a bruise when she kicked him. Both Maria and Juan insisted the other one had started the fight. At this point, their babysitter told them that they were not allowed to play at the park anymore. Both Maria and Juan said that this was unfair and they want a new babysitter.