instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'man is snow gear and skis skiing in the snow'. Find frequency of the letter 'i'
answer:
5


question:
Sentence: 'young boy flying kite in large field at outdoor event'. Find frequency of the letter 'y'
answer:
3


question:
Sentence: 'four men standing next to each other posing for a picture'. Find frequency of the letter 'i'
answer:

3