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


question:
Sentence: 'a man riding his skateboard down low as he turns'. Find frequency of the letter 'g'
answer:
1


question:
Sentence: 'a bear walks down the hill to the water'. Find frequency of the letter 'a'
answer:

4