In this task, you need to count the number of times the given letter appears in the given sentence.

[Q]: Sentence: 'a metallic stove top oven inside of a wooden kitchen'. Find frequency of the letter 'v'
[A]: 2


[Q]: Sentence: 'there is a woman pointing at something with her dog'. Find frequency of the letter 'i'
[A]: 5


[Q]: Sentence: 'a woman is playing an interactive video game'. Find frequency of the letter 't'
[A]:
2