instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'this is an image of a woman playing tennis'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'a young man with glasses on is taking a big bite'. Find frequency of the letter 's'
answer:
4


question:
Sentence: 'a group of people next to a woman seated on a bench'. Find frequency of the letter 'g'
answer:

1