( ( Unless ( ( ( an ( electronegative atom ) ) ( such ( as ( ( nitrogen or ) oxygen ) ) ) ) ( ( is directly ) ( attached ( to ( the ( sp ( hybridized carbon ) ) ) ) ) ) ) ) ( , ( ( ( the ( dipole moment ) ) ( associated ( with ( this bond ) ) ) ) ( ( is small ) ; ) ) ) )
(ROOT (S (SBAR (IN Unless) (S (NP (NP (DT an) (JJ electronegative) (NN atom)) (PP (JJ such) (IN as) (NP (NN nitrogen) (CC or) (NN oxygen)))) (VP (VBZ is) (ADVP (RB directly)) (VP (VBN attached) (PP (TO to) (NP (DT the) (JJ sp) (JJ hybridized) (NN carbon))))))) (, ,) (NP (NP (DT the) (JJ dipole) (NN moment)) (VP (VBN associated) (PP (IN with) (NP (DT this) (NN bond))))) (VP (VBZ is) (ADJP (JJ small))) (: ;)))
Unless an electronegative atom such as nitrogen or oxygen is directly attached to the sp hybridized carbon, the dipole moment associated with this bond is small;
(ROOT (S (NP (NNS Amines)) (VP (VBP are) (VP (VBN classified) (PP (VBG according) (PP (TO to) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NN carbon) (NNS atoms)) (VP (VBG bonded) (ADVP (RB directly)) (PP (TO to) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (JJ nitrogen) (NN atom))))))))))) (. .)))