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

Ex Input:
Sentence: 'A duckling swims in a pond and catches some food'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'A bid walking on a stream of water next to green plants'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'a bunch of stuffed animals are on wooden shelves'. Count the number of verbs in this sentence.

Ex Output:

1