instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a small boat travels on the water next to the shore'. Find frequency of the letter 'a'
answer:
5


question:
Sentence: 'a herd of giraffes in tall african grass'. Find frequency of the letter 'a'
answer:
6


question:
Sentence: 'cows have lined up close together near a wooden fence'. Find frequency of the letter 'w'
answer:

2


