instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man pushing a cart full of bananas'. Find frequency of the letter 'u'
answer:
2


question:
Sentence: 'a man hits a tennis ball with a racket on the court'. Find frequency of the letter 'c'
answer:
2


question:
Sentence: 'yellow sofa and a piece of luggage in a hotel room'. Find frequency of the letter 'a'
answer:

5