( ( In ( the ( broadest sense ) ) ) ( , ( ( a weed ) ( ( is ( ( any plant ) ( growing ( where ( it ( ( is not ) wanted ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (JJS broadest) (NN sense))) (, ,) (NP (DT a) (NN weed)) (VP (VBZ is) (NP (NP (DT any) (NN plant)) (VP (VBG growing) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ is) (RB not) (VP (VBN wanted)))))))) (. .)))
In the broadest sense, a weed is any plant growing where it is not wanted.
(ROOT (S (NP (NP (NNS Plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP grow) (SBAR (WHADVP (WRB where)) (S (NP (PRP you)) (VP (VBP do) (RB n't) (VP (VB want) (NP (PRP them)))))))))) (VP (VBP are) (VP (VBN called) (NP (NNS weeds)))) (. .)))