instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two people wearing snowboards sitting on a snowy slope'. Find frequency of the letter 's'
answer:
5


question:
Sentence: 'a red fire hydrant opened and spilling water'. Find frequency of the letter 'd'
answer:
4


question:
Sentence: 'a couple of laptops sit next to each other on a desk'. Find frequency of the letter 'p'
answer:

3