instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'man in a radio studio wearing a suit in front of a microphone'. Find frequency of the letter 't'
answer:
3


question:
Sentence: 'two men are playing a video game as another sits watching'. Find frequency of the letter 'a'
answer:
7


question:
Sentence: 'there are two skier that are not that far apart'. Find frequency of the letter 't'
answer:

8