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

Example Input: Sentence: 'The three giraffes are being kept indoors for being to see'. Count the number of verbs in this sentence.
Example Output: 3

Example Input: Sentence: 'A teddy bear with a huge forehead and a bandana around its neck'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A skateboarder doing tricks at a skate park while others look on'. Count the number of nouns in this sentence.
Example Output:
5