instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a man with a large grey and black beard and glasses and a tie'. Find frequency of the letter 'e'
answer:
5


question:
Sentence: 'two computers and a laptop set up on a desk'. Find frequency of the letter 'r'
answer:
1


question:
Sentence: 'a bed with fabrics strewn on it on a wooden floor'. Find frequency of the letter 'r'
answer:

3