tree_speakerprovedtex [S [NP [DET The ] [N' [N' [N speaker ] ] [PP [P at ] [NP [DET the ] [N' [ADJ huge ] [N' [ADJ prestigious ] [N' [N conference ] ] ] ] ] ] ] ] [VP [V proved ] [CP [C that ] [S [NP [DET her ] [N' [N theory ] ] ] [VP [V works ] ] ] ] ] ]