instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a social occasion of people are uncovered before the open day'. Find frequency of the letter 'c'
answer:
4

question:
Sentence: 'a black horse with a white dot on its forehead'. Find frequency of the letter 't'
answer:
4

question:
Sentence: 'a cat on the back of a maroon chair waving its paw at a dog sitting in the seat part of the chair'. Find frequency of the letter 'i'
answer:
7