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: 'a small doughnut held in a persons hand'. Find frequency of the letter 'n'
answer:
4


question:
Sentence: 'the small kitchen is cluttered with various utensils'. Find frequency of the letter 'r'
answer:

2