( ( If ( ( the moities ) ( are ( attached indirectly ) ) ) ) ( , ( ( ( each atom ) ( of ( the ( connecting chain ) ) ) ) ( ( must ( ( ( be ( attached ( by covalent ) ) ) or ) ( ( coordinate bonding ) ( ( ( to ( ( another atom ) ( of ( the ( connecting chain ) ) ) ) ) or ) ( to ( one ( of ( the moieties ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT the) (NNS moities)) (VP (VBP are) (VP (VBN attached) (ADVP (RB indirectly)))))) (, ,) (NP (NP (DT each) (NN atom)) (PP (IN of) (NP (DT the) (JJ connecting) (NN chain)))) (VP (MD must) (VP (VP (VB be) (VP (VBN attached) (PP (IN by) (NP (NN covalent))))) (CC or) (VP (VB coordinate) (NP (NN bonding)) (PP (PP (TO to) (NP (NP (DT another) (NN atom)) (PP (IN of) (NP (DT the) (JJ connecting) (NN chain))))) (CC or) (PP (TO to) (NP (NP (CD one)) (PP (IN of) (NP (DT the) (NNS moieties))))))))) (. .)))
If the moities are attached indirectly, each atom of the connecting chain must be attached by covalent or coordinate bonding to another atom of the connecting chain or to one of the moieties.
(ROOT (S (NP (DT A) (NN covalent) (NN network)) (ADVP (RB solid)) (VP (VBZ is) (NP (NP (DT a) (NN compound)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NP (DT all)) (PP (IN of) (NP (DT the) (NNS atoms)))) (VP (VBP are) (VP (VBN connected) (PP (TO to) (NP (CD one) (DT another))) (PP (IN by) (NP (JJ covalent) (NNS bonds))))))))) (. .)))