instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'apples, pears, and oranges are piled up for sale'. Find frequency of the letter 'a'
answer:
6

question:
Sentence: 'a small white plane sitting on top of the ocean'. Find frequency of the letter 'e'
answer:
4

question:
Sentence: 'there is a large table with flowers, fruits and bottles'. Find frequency of the letter 't'
answer:
6