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

Example Input: Sentence: 'Two people holding tennis rackets on a tennis court'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A walking sign glows underneath two street signs'. Count the number of verbs in this sentence.
Example Output: 2

Example Input: Sentence: 'Woman in a black hoodie holding up a toothbrush in her hand'. Count the number of nouns in this sentence.
Example Output:
4