( ( ( ( ( ( Common goals ) , ) interests ) and ) ( small size ) ) ( all ( ( contribute ( to this ) ) . ) ) )
(ROOT (S (NP (NP (JJ Common) (NNS goals)) (, ,) (NP (NNS interests)) (CC and) (NP (JJ small) (NN size))) (RB all) (VP (VB contribute) (PP (TO to) (NP (DT this)))) (. .)))
Common goals, interests and small size all contribute to this.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP have) (NP (NP (DT the) (JJ small) (NN size)) (PP (IN in) (NP (JJ common))))) (. .)))