instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'there is a baseball game on and a few people are watching'. Find frequency of the letter 'i'
answer:
2

question:
Sentence: 'a woman holds some baked goods at the convention'. Find frequency of the letter 'd'
answer:
3

question:
Sentence: 'a person stands on his/her head while a man looks on'. Find frequency of the letter 's'
answer:
5