( ( ( The ( Hydrogen Bond ) ) ( In ( ( the ( covalent bonds ) ) ( of Nature ) ) ) ) ( , ( ( not ( all atoms ) ) ( ( ( share ( their electrons ) ) equally ) . ) ) ) )
(ROOT (S (PP (NP (DT The) (NNP Hydrogen) (NNP Bond)) (IN In) (NP (NP (DT the) (JJ covalent) (NNS bonds)) (PP (IN of) (NP (NNP Nature))))) (, ,) (NP (RB not) (DT all) (NNS atoms)) (VP (VBP share) (NP (PRP$ their) (NNS electrons)) (ADVP (RB equally))) (. .)))
The Hydrogen Bond In the covalent bonds of Nature, not all atoms share their electrons equally.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NNS electrons)) (VP (VBP are) (VP (VBN shared) (ADVP (RB equally)))))) (, ,) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (NN nonpolar) (NNS bonds)))) (. .)))