(No real names have been used. Remember, do not name children in blog posts)
Only two boys and two girls can play tennis.
Jimi said: 'I will only play if Jennie plays.'
Jennie said: 'I won't play if Ben is playing.'
Ben said: 'I won't play if Jonny or Gemma plays.'
Jonny said: 'I will only play if Sarah plays.'
Sarah said: 'I don't mind who I play with.'
Which two boys and which two girls play tennis?