instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'
answer:
1


question:
Sentence: 'a man flying through the air on a bicycle'. Find frequency of the letter 'u'
answer:
1


question:
Sentence: 'a man wearing protective gear is on a skateboard'. Find frequency of the letter 't'
answer:

3