instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a snow filled mountain with a guy with ski's'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'there is no image here to provide a caption for'. Find frequency of the letter 'o'
answer:
5


question:
Sentence: 'a bbq filled with lots of hot dogs next to paper plates'. Find frequency of the letter 'a'
answer:

3