( ( Although ( ( elephants ( , ( mice ( and ( water striders ) ) ) ) ) ( have ( diverse sizes ) ) ) ) ( , ( ( ( one thing ) ( they ( share ( in common ) ) ) ) ( ( is ( that ( they ( ( are all ) ( composed ( of cells ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Although) (S (NP (NNS elephants) (, ,) (NNS mice) (CC and) (NN water) (NNS striders)) (VP (VBP have) (NP (JJ diverse) (NNS sizes))))) (, ,) (NP (NP (CD one) (NN thing)) (SBAR (S (NP (PRP they)) (VP (VBP share) (PP (IN in) (NP (JJ common))))))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP are) (RB all) (VP (VBN composed) (PP (IN of) (NP (NNS cells)))))))) (. .)))
Although elephants, mice and water striders have diverse sizes, one thing they share in common is that they are all composed of cells.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP have) (NP (NP (DT the) (JJ small) (NN size)) (PP (IN in) (NP (JJ common))))) (. .)))