instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two women standing next to each other holding tennis rackets'. Find frequency of the letter 't'
answer:
7


question:
Sentence: 'a chair and umbrella on a sandy beach'. Find frequency of the letter 's'
answer:
1


question:
Sentence: 'a person reaching towards a frisbee that is near a window'. Find frequency of the letter 'e'
answer:

5