The theory has it that the human intestines are frill of bacteria which break down certain foodstuffs as part of the process of digestion.
(bacteria; break down; certain foodstuffs) (The theory; has; it) Context(The theory has,List([0, 14))):(the human intestines; are; frill of bacteria)
The theory has,List([0, 14))
bacteria The theory the human intestines
break down has are
certain foodstuffs
it
frill of bacteria