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)))))))))))))
Bloomer is another word for flower, butter is for ram and flower for river. 
( ( Bloomer ( is ( ( another word ) ( for flower ) ) ) ) ( , ( butter ( ( is ( for ( ( ( ram and ) flower ) ( for river ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (NNP Bloomer)) (VP (VBZ is) (NP (NP (DT another) (NN word)) (PP (IN for) (NP (NN flower)))))) (, ,) (NP (NN butter)) (VP (VBZ is) (PP (IN for) (NP (NP (NN ram) (CC and) (NN flower)) (PP (IN for) (NP (NN river)))))) (. .)))