A solid is an ignitable waste if it is capable of causing fire through friction or absorption of moisture, or can undergo spontaneous chemical change which can result in vigorous and persistent burning.
(A solid; is; an ignitable waste) (it; is; capable of causing fire through friction or absorption of moisture) (it; of causing; fire) (spontaneous chemical change; can result; in vigorous and persistent burning)
A solid it it spontaneous chemical change
is is of causing can result
an ignitable waste
capable of causing fire through friction or absorption of moisture
fire
in vigorous and persistent burning