( ( ( The probability ) ( of ( ( finding ( an electron ) ) ( at ( an ( orbital node ) ) ) ) ) ) ( ( is zero ) . ) )
(ROOT (S (NP (NP (DT The) (NN probability)) (PP (IN of) (S (VP (VBG finding) (NP (DT an) (NN electron)) (PP (IN at) (NP (DT an) (JJ orbital) (NN node))))))) (VP (VBZ is) (NP (CD zero))) (. .)))
The probability of finding an electron at an orbital node is zero.
(ROOT (S (NP (DT The) (NN orbital)) (VP (VBZ is) (NP (NP (DT the) (NN area)) (SBAR (WHADVP (WRB where)) (S (NP (DT an) (NN electron)) (VP (VBZ is) (ADJP (RBS most) (JJ likely) (S (VP (TO to) (VP (VB be) (VP (VBN found))))))))))) (. .)))