( Arachnids ( ( ( ( lack ( the wings ) ) and ) ( antannae ( that ( Insects possess ) ) ) ) . ) )
(ROOT (S (NP (NNS Arachnids)) (VP (VP (VBP lack) (NP (DT the) (NNS wings))) (CC and) (VP (VBP antannae) (SBAR (IN that) (S (NP (NNP Insects)) (VP (VBP possess)))))) (. .)))
Arachnids lack the wings and antannae that Insects possess.
(ROOT (S (SBAR (IN While) (FRAG (ADJP (JJ similar) (PP (TO to) (NP (NNS insects)))))) (, ,) (NP (NNS arachnids)) (VP (VBP are) (NP (NP (JJ eight-legged) (NNS invertebrates)) (SBAR (WHNP (WDT that)) (S (VP (VBP lack) (NP (NN antennae) (CC or) (NNS wings))))))) (. .)))