instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a player swings his bat at a baseball game'. Find frequency of the letter 'p'
answer:
1


question:
Sentence: 'a grey hummingbird by fence and tree branches'. Find frequency of the letter 'y'
answer:
2


question:
Sentence: 'a nintendo wii game console box sitting on a table'. Find frequency of the letter 'o'
answer:

5