instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman cross country skiing in a competition'. Find frequency of the letter 's'
answer:
3


question:
Sentence: 'a person is holding a chocolate doughnut with rainbow sprinkles'. Find frequency of the letter 's'
answer:
4


question:
Sentence: 'a red and yellow truck is parked in grass'. Find frequency of the letter 's'
answer:

3