instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a bird is perched on a container in a person's hand'. Find frequency of the letter 'c'
answer:
2


question:
Sentence: 'a white police vehicle parked on a paved street'. Find frequency of the letter 'a'
answer:
4


question:
Sentence: 'a number of fruits on a counter with bananas'. Find frequency of the letter 'a'
answer:

5