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

Ex Input:
Sentence: 'Luggage coming down a carousel at an airport'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A toilet is on the road by a truck'. Count the number of verbs in this sentence.

Ex Output:
0


Ex Input:
Sentence: 'a lot of people walking down the sidewalk next to a busy road'. Count the number of nouns in this sentence.

Ex Output:

4