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: 'salad and vegetables with me on top of plate'. Find frequency of the letter 'o'
answer:
3


question:
Sentence: 'it is hard to tell what is in a gross looking vase'. Find frequency of the letter 'a'
answer:

4