( ( Above ( the troposphere ) ) ( ( is ( ( ( the stratosphere ) , ) ( which ( includes ( the ( ozone layer ) ) ) ) ) ) . ) )
(ROOT (SINV (PP (IN Above) (NP (DT the) (NNP troposphere))) (VP (VBZ is)) (NP (NP (DT the) (NN stratosphere)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ includes) (NP (DT the) (NN ozone) (NN layer)))))) (. .)))
Above the troposphere is the stratosphere, which includes the ozone              layer.
(ROOT (S (NP (DT The) (NN stratosphere)) (VP (VBZ is) (NP (NP (DT the) (NN layer)) (PP (IN above) (NP (DT the) (NNP troposphere))))) (. .)))