-- when are bears bears and when are they like humans , only hairier -- would tax einstein 's brain . 
(ROOT (SBARQ (NFP --) (SBAR (SBARQ (WHADVP (WRB when)) (SINV (VBP are) (NP (NNS bears)) (NP (NNS bears)))) (CC and) (SBARQ (WHADVP (WRB when)) (SQ (VBP are) (NP (PRP they)) (PP (IN like) (NP (NNS humans))) (, ,) (ADJP (RB only) (NN hairier))))) (, --) (VP (MD would) (VP (VB tax) (NP (NP (NNP einstein) (POS 's)) (NN brain)))) (. .)))
(ROOT (SBARQ (NFP ) (SBAR (SBARQ (WHADVP (WRB )) (SINV (VBP ) (NP (NNS )) (NP (NNS )))) (CC ) (SBARQ (WHADVP (WRB )) (SQ (VBP ) (NP (PRP )) (PP (IN ) (NP (NNS ))) (, ) (ADJP (RB ) (NN ))))) (, ) (VP (MD ) (VP (VB ) (NP (NP (NNP ) (POS )) (NN )))) (. )))