instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a very big nice looking living room with nice furnishings'. Find frequency of the letter 'e'
answer:
3


question:
Sentence: 'there is a stop sign that has a reflection in a puddle'. Find frequency of the letter 'e'
answer:
5


question:
Sentence: 'a clock tower stands above a brick building'. Find frequency of the letter 'c'
answer:

3