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

Input: Consider Input: Sentence: 'A clock on a red building letting people know the time'. Count the number of verbs in this sentence.

Output: 2


Input: Consider Input: Sentence: 'A view of a blue train on train tracks'. Count the number of verbs in this sentence.

Output: 0


Input: Consider Input: Sentence: 'Two people on a motorcycle, driving on a highway in the mountains'. Count the number of verbs in this sentence.


Output: 1