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

[EX Q]: Sentence: 'many different species of sheep in display at a museum'. Find frequency of the letter 'h'
[EX A]: 1

[EX Q]: Sentence: 'this is a sign in front of a large cathedral'. Find frequency of the letter 'a'
[EX A]: 5

[EX Q]: Sentence: 'a bowl of granola with raspberries and honey on top with a spoon'. Find frequency of the letter 'w'
[EX A]:
3