Bloomer (for `flower'), butter (for `ram'), or even flower (for `river') are recurrent examples, but solvers must always be on the alert for new traps of this 
( ( ( ( ( ( ( ( ( ( ( Bloomer ( -LRB- ( ( for ( ` ( flower ' ) ) ) -RRB- ) ) ) , ) ( butter ( -LRB- ( ( for ( ` ( ram ' ) ) ) -RRB- ) ) ) ) , ) or ) ( even flower ) ) ( -LRB- ( ( for ( ` ( river ' ) ) ) -RRB- ) ) ) ( are ( recurrent examples ) ) ) , ) but ) ( solvers ( ( must always ) ( be ( on ( ( the alert ) ( for ( ( new traps ) ( of this ) ) ) ) ) ) ) ) )
(ROOT (FRAG (S (S (NP (NP (NP (NP (NNP Bloomer)) (PRN (-LRB- -LRB-) (PP (IN for) (NP (`` `) (NN flower) ('' '))) (-RRB- -RRB-))) (, ,) (NP (NP (NN butter)) (PRN (-LRB- -LRB-) (PP (IN for) (NP (`` `) (NN ram) ('' '))) (-RRB- -RRB-))) (, ,) (CC or) (NP (RB even) (NN flower))) (PRN (-LRB- -LRB-) (PP (IN for) (NP (`` `) (NN river) ('' '))) (-RRB- -RRB-))) (VP (VBP are) (NP (JJ recurrent) (NNS examples)))) (, ,) (CC but) (S (NP (NNS solvers)) (VP (MD must) (ADVP (RB always)) (VP (VB be) (PP (IN on) (NP (NP (DT the) (NN alert)) (PP (IN for) (NP (NP (JJ new) (NNS traps)) (PP (IN of) (NP (DT this)))))))))))))
These words typically don't rationally relate to one another. 
( ( These words ) ( typically ( ( ( ( do n't ) rationally ) ( relate ( to ( one another ) ) ) ) . ) ) )
(ROOT (S (NP (DT These) (NNS words)) (ADVP (RB typically)) (VP (VBP do) (RB n't) (ADVP (RB rationally)) (VP (VB relate) (PP (TO to) (NP (CD one) (DT another))))) (. .)))