In this task, you need to count the number of nouns/verbs in the given sentence.

Example Input: Sentence: 'a cat sitting on a desk with keyboard and a computer mouse'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'A man in tights holding a pair of skis'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'Black computer monitor sitting on top of a black computer desk'. Count the number of verbs in this sentence.
Example Output:
1