Label the words in bold.
Cats are known to be very agile and playful animals.
Cats - noun
are - verb
known - verb
to be - verb
very - adverb
agile - adjective
and - conjunction
playful - adjective
animals - noun
Complete the following task based on the instruction and optional input provided.### Instruction:
Label the words in bold.

### Input:
Cats are known to be very agile and playful animals.

### Output:
Cats - noun
are - verb
known - verb
to be - verb
very - adverb
agile - adjective
and - conjunction
playful - adjective
animals - noun