The final reason for the teen renaissance is boomer self-obsession.
( ( ( The ( final reason ) ) ( for ( the ( teen renaissance ) ) ) ) ( ( is ( boomer self-obsession ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ final) (NN reason)) (PP (IN for) (NP (DT the) (JJ teen) (NN renaissance)))) (VP (VBZ is) (NP (NN boomer) (NN self-obsession))) (. .)))
Social media is the final reason behind the current teen renaissance.
( ( Social media ) ( ( is ( ( the ( final reason ) ) ( behind ( the ( current ( teen renaissance ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Social) (NNS media)) (VP (VBZ is) (NP (NP (DT the) (JJ final) (NN reason)) (PP (IN behind) (NP (DT the) (JJ current) (JJ teen) (NN renaissance))))) (. .)))