instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
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: 'a social occasion of people are uncovered before the open day'. Find frequency of the letter 'c'
answer:
4


question:
Sentence: 'a man bending over a pile of umbrellas sitting on a sidewalk'. Find frequency of the letter 'g'
answer:

2