instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a gray colored pigeon that is perched on a railing outside of a building, with other buildings in the background'. Find frequency of the letter 'e'
answer:
7


question:
Sentence: 'two indian women in colorful garb standing barefoot with two indian men'. Find frequency of the letter 'd'
answer:
3


question:
Sentence: 'the man is standing in the snow with his snow board'. Find frequency of the letter 'n'
answer:

6