( How ( ( ( does copper ) ( conduct electricity ) ) ? ) )
(ROOT (SBARQ (WHADVP (WRB How)) (SQ (VBZ does) (NP (NN copper)) (VP (VB conduct) (NP (NN electricity)))) (. ?)))
How does copper conduct electricity?
(ROOT (S (NP (NN Copper)) (VP (VBZ conducts) (NP (NP (NN electricity)) (NP (DT the) (JJS best)))) (. .)))