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

Example Input: Sentence: 'a group of people playing soccer on a field of grass'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A train car with four beds next to a window'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A man holding a game controller makes an arm movement'. Count the number of verbs in this sentence.
Example Output:
2