instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a gourmet looking hamburger with fries on a dining table with some wine'. Find frequency of the letter 't'
answer:
4


question:
Sentence: 'three birds are sitting on a tree in a forest'. Find frequency of the letter 'h'
answer:
1


question:
Sentence: 'a man is reaching up with a tennis racket'. Find frequency of the letter 'c'
answer:

2