instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'
answer:
1


question:
Sentence: 'a log in the water with three birds perched on it'. Find frequency of the letter 'r'
answer:
4


question:
Sentence: 'the man holding a bottled water is brushing his teeth'. Find frequency of the letter 'b'
answer:

2