I don't really get the water one and fire. But my interputation of it is...
Water is like people who get in your way. Or things that get in your way. Fire is what makes you mad or triggered.
This kind of information could be found on a survey where a comparison between the poem and the song can be found-.
In the case of the notecard can be used as a speech reminder and the source card might be used for indexing as well as referencing main pages.
<span>Horatio is the character from hamlet that tells hamlet about the poisoned drink in his rapier battle. </span>