( ( ( The ( two electrons ) ) ( in ( the sigma-bonding ) ) ) ( ( ( give H-F ) ( ( a ( bond order ) ) ( of one ) ) ) ; ) )
(ROOT (S (NP (NP (DT The) (CD two) (NNS electrons)) (PP (IN in) (NP (DT the) (NN sigma-bonding)))) (VP (VBP give) (NP (NNP H-F)) (NP (NP (DT a) (NN bond) (NN order)) (PP (IN of) (NP (CD one))))) (: ;)))
The two electrons in the sigma-bonding give H-F a bond order of one;
(ROOT (S (NP (DT A) (JJ double) (NN bond)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD one) (NN sigma) (NN bond)) (CC and) (NP (CD one) (NN pi) (NN bond))))) (. .)))