instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a truck with a camper sits parked in some vegetation'. Find frequency of the letter 's'
answer:
3


question:
Sentence: 'a dog on a couch near many pillows'. Find frequency of the letter 'p'
answer:
1


question:
Sentence: 'a bathroom has a toilet, shower and a painting on the wall'. Find frequency of the letter 'o'
answer:

5