instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a giraffe shares a habitat with a zebra, an ostrich, and an okapi'. Find frequency of the letter 'e'
answer:
3


question:
Sentence: 'a herd of giraffe walking across a field'. Find frequency of the letter 'k'
answer:
1


question:
Sentence: 'the view of a bathroom showing a toilet with a small waste bin next to it'. Find frequency of the letter 'e'
answer:

5