When we see something that exists in real life, there are many different ways to display imagery and importance using art. what the artist depends on what he/she wants to communicate.

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.

The comma should appear after the quote.

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