instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a giraffe sticking it's tongue out near a window'. Find frequency of the letter 'a'
answer:
4


question:
Sentence: 'a person trying to flip a skateboard in a garage'. Find frequency of the letter 'a'
answer:
7


question:
Sentence: 'a personembracing  herself to catch a frisbee'. Find frequency of the letter 't'
answer:

2