instruction:
In this task, you need to count the number of times the given letter appears in the given sentence.
question:
Sentence: 'a woman swinging a tennis racquet towards a tennis ball'. Find frequency of the letter 'e'
answer:
3


question:
Sentence: 'a boy swinging a bat while playing baseball'. Find frequency of the letter 'h'
answer:
1


question:
Sentence: 'the two figurine is beside a slice of pizza on a tray'. Find frequency of the letter 'i'
answer:

6