Which of the following is an example of a sentence fragment?

Precarious subsistence voracious abysmal wood is to fire as food is to arrowright grinning is to cheerful as teetering is to arrowright conniving is to scheming as terrible is to arrowright mournful is to sad as gluttonous is to arrowright

Question is redacted; delete this

Lines 47–56: determine the central idea of these lines