instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a bowl of granola with raspberries and honey on top with a spoon'. Find frequency of the letter 'w'
answer:
3

question:
Sentence: 'man riding a skate board down the little board way'. Find frequency of the letter 'k'
answer:
1

question:
Sentence: 'blurry black and white image of a city street'. Find frequency of the letter 'r'
answer:
3