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

Ex Input:
Sentence: 'A orange bus driving down the street carrying passengers'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'A man flying a kite at the beach while several people walk by'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'Four brown birds sitting on a window edge'. Count the number of verbs in this sentence.

Ex Output:

1