instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two boys are doing skateboard jumps in the street'. Find frequency of the letter 's'
answer:
4


question:
Sentence: 'man in a sleeping bag on the floor using a laptop computer'. Find frequency of the letter 'i'
answer:
3


question:
Sentence: 'a couple is cutting in to a cake at a wedding'. Find frequency of the letter 'd'
answer:

2