answer: #Person1# invites and will teach Anna to dance.
documents: #Person1#: Anna, Would you like to dance?
  #Person2#: I'd love to, but I'm a terrible dancer. I'm afraid I may step on your toes.
  #Person1#: Don't worry about it. I'll show you how. It's a piece of cake.
  #Person2#: Thank you. I'll try my best.