instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two men are playing a video game as another sits watching'. Find frequency of the letter 'a'
answer:
7


question:
Sentence: 'a bird outside standing on a table looking up'. Find frequency of the letter 'b'
answer:
2


question:
Sentence: 'blonde woman holding a large hotdog up to her face'. Find frequency of the letter 'n'
answer:

3