distractors: race swim sing
sentence: As they grew, the girl was able to  lead  her birds to run across the grass, but she could not teach, them to  [MASK]  .The little girl became increasingly worried about this, both when  awake  and in her dreams.Suddenly, she thought  of  a clever idea: she would fly a plane to guide them in  flight  .She asked her father for a plane and he made a small one for her.Caring about  her  safety, the father Hew the plane himself.However, the birds didn't  follow  him.They all slept in the grass  instead  .