instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a little boy that has a toothbrush in his mouth'. Find frequency of the letter 'r'
answer:
1


question:
Sentence: 'pizza with different vegetables sitting on top of a wooden slab'. Find frequency of the letter 'o'
answer:
5


question:
Sentence: 'two large elephants grazing in the bushy wilderness'. Find frequency of the letter 'r'
answer:

3