instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'three people are gathered around sitting on a park bench'. Find frequency of the letter 'g'
answer:
2


question:
Sentence: 'a girl sits on a surfboard and smiles'. Find frequency of the letter 'i'
answer:
3


question:
Sentence: 'a bathroom area with a large jacuzzi tub and mirror'. Find frequency of the letter 'a'
answer:

8