instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'two young ladies that are dancing in the room together'. Find frequency of the letter 'a'
answer:
4


question:
Sentence: 'different sets of luggage in a baggage claim area'. Find frequency of the letter 'r'
answer:
2


question:
Sentence: 'a child who is riding on top of a skateboard'. Find frequency of the letter 'o'
answer:

5