In most stories, the hero is the most common person you can imagine, but then some mentor tells him or her that he or she is special. Or in some other cases, an accident, incident or experiment changes them into a stronger being.
Death is my son-in-law, Death is my heir; My daughter he hath wedded: I will die, And leave him all; life, living, all is Death's. How is the excerpt an example of dramatic irony? Capulet does not know that his true son-in-law is Romeo. Capulet expresses his grief by personifying death. Capulet is insulting Paris who would have been his son-in-law. Capulet does not know that Juliet is actually alive.
I think it's not valid because it doesn't say everything with six legs is an insect. As it is, the banquet table and insects just share a common trait. So, I would add that "Everything with six legs is an insect" before claiming that "the banquet table is an insect".