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

Example Input: Sentence: 'A jumbo jet airplane flying through the air'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'The bench seat by the window is empty'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A bear leans on an embankment while people watch him'. Count the number of nouns in this sentence.
Example Output:
3