instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a stuffed animal sitting on an empty bed'. Find frequency of the letter 'u'
answer:
1


question:
Sentence: 'silhouette of person playing frisbee with moutain and sunset'. Find frequency of the letter 'i'
answer:
5


question:
Sentence: 'a pair of sheep running through a grassy field'. Find frequency of the letter 'e'
answer:

3