instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'the little girl is flying her kite in the field'. Find frequency of the letter 'i'
answer:
7


question:
Sentence: 'three men are in a kitchen cooking and cutting through a dish'. Find frequency of the letter 'a'
answer:
4


question:
Sentence: 'a woman holding a knife in one hand , sandwich in the other'. Find frequency of the letter 'n'
answer:

8