( ( Researchers ( of biodiversity ) ) ( ( agree ( that ( we ( are ( in ( ( the midst ) ( of ( the ( seventh ( mass extinction ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Researchers)) (PP (IN of) (NP (NN biodiversity)))) (VP (VBP agree) (SBAR (IN that) (S (NP (PRP we)) (VP (VBP are) (PP (IN in) (NP (NP (DT the) (NN midst)) (PP (IN of) (NP (DT the) (JJ seventh) (NN mass) (NN extinction))))))))) (. .)))
Researchers of biodiversity agree that we are in the midst of the seventh mass extinction.
(ROOT (S (NP (NP (ADJP (JJ Sudden) (CC and) (JJ dramatic)) (NNS losses)) (PP (IN of) (NP (NN biodiversity)))) (VP (VBP are) (VP (VBN called) (NP (JJ mass) (NN extinction)))) (. .)))