instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a bird is perched on a container in a person's hand'. Find frequency of the letter 'c'
answer:
2


question:
Sentence: 'a child sitting a table with a pizza in front of him'. Find frequency of the letter 'h'
answer:
3


question:
Sentence: 'a dog sitting looking through a grate out a window'. Find frequency of the letter 'o'
answer:

6