instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman is taking a sip of a drink from a glass'. Find frequency of the letter 'i'
answer:
4


question:
Sentence: 'a person standing operating a cell phone in a room'. Find frequency of the letter 'n'
answer:
6


question:
Sentence: 'a collection of antique sewing items on a table'. Find frequency of the letter 'e'
answer:

5