instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'an elephant with broken tusks stands in front of a hill and boulders'. Find frequency of the letter 'n'
answer:
7


question:
Sentence: 'a cat sprawls out and sleeps on its back on a lounge chair with an acorn theme'. Find frequency of the letter 'r'
answer:
3


question:
Sentence: 'a lady walking outside in the rain at night'. Find frequency of the letter 'h'
answer:

2