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

Example Input: Sentence: 'A small clock in a big room seen through a window'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A person on a field swinging a tennis racket'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'This man is holding his hand over the other man's hand while they are looking at something'. Count the number of nouns in this sentence.
Example Output:
4