( ( Animal trainers ) ( ( ( have long ) ( known ( that ( ( ( the ( best way ) ) ( to ( control ( an ( unwanted behavior ) ) ) ) ) ( is ( to ( ( ( put ( ( that behavior ) ( on cue ) ) ) , ) ( then ( to ( never ( give ( the cue ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Animal) (NNS trainers)) (VP (VBP have) (ADVP (RB long)) (VP (VBN known) (SBAR (IN that) (S (NP (NP (DT the) (JJS best) (NN way)) (SBAR (S (VP (TO to) (VP (VB control) (NP (DT an) (JJ unwanted) (NN behavior))))))) (VP (VBZ is) (S (VP (TO to) (VP (VB put) (NP (NP (DT that) (NN behavior)) (PP (IN on) (NP (NN cue)))) (, ,) (S (RB then) (VP (TO to) (VP (ADVP (RB never)) (VB give) (NP (DT the) (NN cue))))))))))))) (. .)))
Animal trainers have long known that the best way to control an unwanted behavior is to put that behavior on cue, then to never give the cue.
(ROOT (S (NP (NNP Animal) (NNS behaviors)) (VP (VBP are) (VP (VBN controlled) (PP (IN by) (NP (NP (DT both) (NNS genes) (CC and) (NNS experiences)) (PP (IN in) (NP (DT a) (VBN given) (NN envionment))))))) (. .)))