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