In this task, you need to count the number of times the given letter appears in the given sentence.
--------
Question: Sentence: 'a woman is taking a sip of a drink from a glass'. Find frequency of the letter 'i'

Answer: 4


Question: Sentence: 'man riding a skate board down the little board way'. Find frequency of the letter 'k'

Answer: 1


Question: Sentence: 'the giraffe is a tall a the tree trunks near to it'. Find frequency of the letter 'a'

Answer:
5