Early people also learned to make fires by rubbing together pieces of wood until the wood produced a hot powder that could light kindling.
(the wood; produced; a hot powder that could light kindling) (a hot powder; could light; kindling) (Early people; also learned; to make fires by rubbing together pieces of wood) Context(Early people also learned,List([0, 25))):(Early people; also learned to make; fires) Context(Early people also learned to make,List([0, 33))):(Early people; also learned to make fires by rubbing; together; pieces of wood; T:until the wood produced a hot powder)
Early people also learned,List([0, 25)) Early people also learned to make,List([0, 33))
the wood a hot powder Early people Early people Early people
produced could light also learned also learned to make also learned to make fires by rubbing
a hot powder that could light kindling
kindling
to make fires by rubbing together pieces of wood
fires
together pieces of wood T:until the wood produced a hot powder