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

Example Input: Sentence: 'A group of brown teddy bears one without a head'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'an elephant standing in some tall grass next to the bushes'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A little girl crawling out of a piece of luggage'. Count the number of nouns in this sentence.
Example Output:
3