instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man standing on a tennis court holding a racquet'. Find frequency of the letter 's'
answer:
2


question:
Sentence: 'a small boy in a high chair eating a cupcake'. Find frequency of the letter 'i'
answer:
4


question:
Sentence: 'a truck on a parking with people in the background and a car'. Find frequency of the letter 'w'
answer:

1