The heat in the Earth's interior comes from the mantle
Fries's Structure of English, language teachers have described English words as falling into two broad types: those that belong in the dictionary like 'storm' and 'confabulate', called content or lexical words, and those that belong in the grammar like 'of' and 'the', called structure, function or grammatical words.
tl;dr: Structural Words are the meaningless little words in a sentence that make it flow or move from one important word to the next.
Answer:
Randy Adderson, a soc, tells Ponyboy that he won't be showing up at the rumble that night because he's tired of the fighting. Randy also tells Ponyboy that Bob's parents spoiled him rotten. Bob was good looking and intelligent, and his parents allowed him to do whatever he wanted.
Explanation:
The answer is Dante Alighieri, and it was written in 1320, and consists of three parts: Hell, Purgatory, and Heaven.