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

Example Input: Sentence: 'Two people riding a surfboard in the open waves'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'a messy room with clothes and a computer'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'Two toothbrushes and toothpaste are in a container'. Count the number of nouns in this sentence.
Example Output:
3