instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man hits a tennis ball with a racket on the court'. Find frequency of the letter 'c'
answer:
2


question:
Sentence: 'a white toilet sitting next to a bathroom sink'. Find frequency of the letter 'b'
answer:
1


question:
Sentence: 'a plate of bananas, oranges and a bowl of soup'. Find frequency of the letter 'f'
answer:

2