( ( ( ( ( ( The ( Coconut crab ) ) ( uses ( structures ( ( ( called ( ( Branchiostegal lungs ) ( to ( breathe air ) ) ) ) and ) ( indeed ( will ( drown ( in water ) ) ) ) ) ) ) ) , ) hence ) ( it ( ( ( breathes ( on land ) ) and ) ( holds ( its ( breath underwater ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NNP Coconut) (NN crab)) (VP (VBZ uses) (SBAR (S (NP (NNS structures)) (VP (VP (VBD called) (S (NP (NNP Branchiostegal) (NNS lungs)) (VP (TO to) (VP (VB breathe) (NP (NN air)))))) (CC and) (VP (ADVP (RB indeed)) (MD will) (VP (VB drown) (PP (IN in) (NP (NN water)))))))))) (, ,) (ADVP (RB hence)) (S (NP (PRP it)) (VP (VP (VBZ breathes) (PP (IN on) (NP (NN land)))) (CC and) (VP (VBZ holds) (NP (PRP$ its) (NN breath) (NN underwater))))) (. .)))
The Coconut crab uses structures called Branchiostegal lungs to breathe air and indeed will drown in water, hence it breathes on land and holds its breath underwater.
(ROOT (S (NP (DT An) (JJ underwater) (NN spider)) (VP (VBZ uses) (NP (JJ shiny) (NN air) (NN bubble) (S (VP (TO to) (VP (VP (VB breathe)) (CC and) (VP (VB keep) (ADJP (JJ alive)))))))) (. .)))