instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'this is a close up view of a tennis player during the game'. Find frequency of the letter 't'
answer:
3


question:
Sentence: 'a train sits on a railroad track as a metal awning covers it'. Find frequency of the letter 'l'
answer:
2


question:
Sentence: 'in a kitchen is a refrigerator with some items set on top of it'. Find frequency of the letter 'h'
answer:

2