A sentence fragment...
It does not sound right, therefore it is not complete (fragment). Run-on sentences are complete, yet they are extended to much.
The dramatic irony lies in the way that we know just as macbeth's himself knows
Answer:
You're a teddy bear
Riddle:
I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?
An exposition is a settling fourth of meaning or intent