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

Ex Input:
Sentence: 'A very old style fire truck at the station'. Count the number of verbs in this sentence.

Ex Output:
0


Ex Input:
Sentence: 'A person on a field swinging a tennis racket'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'there are five people on surf boards in the ocean'. Count the number of verbs in this sentence.

Ex Output:

0