instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a tv in a glass mirror in the bathroom'. Find frequency of the letter 'h'
answer:
2


question:
Sentence: 'two giraffes standing next to some trees'. Find frequency of the letter 'f'
answer:
2


question:
Sentence: 'a person holding a rope, ridding on water skis'. Find frequency of the letter 'p'
answer:

2