instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'small airplane in the process of taking off'. Find frequency of the letter 'e'
answer:
3


question:
Sentence: 'a woman in a tank top reaches out for a frisbee'. Find frequency of the letter 'a'
answer:
6


question:
Sentence: 'a long row of tables displaying lots of fruit'. Find frequency of the letter 'o'
answer:

5