instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a photo of a small boat on a shore'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'two elephants facing each other touching trunks in an enclosure'. Find frequency of the letter 'f'
answer:
1


question:
Sentence: 'several toilets with various types of lids on display for sale'. Find frequency of the letter 'r'
answer:

3