instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a red train traveling down train tracks near a forest'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'a bathroom that has it's lights turned on'. Find frequency of the letter 'h'
answer:
4


question:
Sentence: 'in a wok there is cous cous and a variety of crisp vegetables'. Find frequency of the letter 'u'
answer:

2