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: 'three woman are having a discussion in the kitchen'. Find frequency of the letter 'n'
answer:
5


question:
Sentence: 'a stop sign suspended outside a home with a blue garage door'. Find frequency of the letter 'n'
answer:

2