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

Example Input: Sentence: 'A tall  giraffe standing alone in a forest'. Count the number of nouns in this sentence.
Example Output: 2

Example Input: Sentence: 'A man brushing his teeth with a tooth brush'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'People are buying ice cream from the ice cream truck'. Count the number of verbs in this sentence.
Example Output:
1