instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a small boy in a high chair eating a cupcake'. Find frequency of the letter 'i'
answer:
4

question:
Sentence: 'people seated on a table looking very happy'. Find frequency of the letter 'g'
answer:
1

question:
Sentence: 'a herd of zebra standing next to each other near a rocky hillside'. Find frequency of the letter 'i'
answer:
3