instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a herd of giraffes in tall african grass'. Find frequency of the letter 'a'
answer:
6


question:
Sentence: 'a couple is cutting in to a cake at a wedding'. Find frequency of the letter 'd'
answer:
2


question:
Sentence: 'a person playing a game with a remote controller'. Find frequency of the letter 'p'
answer:

2