But what about a reference by MacNeil's partner, Jim Lehrer, to  some ten thousand black gold and diamond miners [on strike in South Africa]. 
( But ( what ( ( ( ( ( about ( a reference ) ) ( by ( ( ( ( ( MacNeil 's ) partner ) , ) ( Jim Lehrer ) ) , ) ) ) ( to ( ( some ( ten thousand ) ) ( black ( gold ( and ( diamond miners ) ) ) ) ) ) ) ( ( -LSB- ( on strike ) ) ( in ( South ( Africa -RSB- ) ) ) ) ) . ) ) )
(ROOT (S (CC But) (NP (WDT what)) (VP (ADVP (IN about) (NP (DT a) (NN reference)) (PP (IN by) (NP (NP (NP (NNP MacNeil) (POS 's)) (NN partner)) (, ,) (NP (NNP Jim) (NNP Lehrer)) (, ,))) (PP (TO to) (NP (QP (DT some) (CD ten) (CD thousand)) (JJ black) (NN gold) (CC and) (NN diamond) (NNS miners)))) (VBD -LSB-) (PP (IN on) (NP (NN strike))) (PP (IN in) (NP (NNP South) (NNP Africa) (NNP -RSB-)))) (. .)))
Black gold and diamond miners on strike in South Africa are being talked about often by people like Jim Lehrer.
( ( ( Black ( gold ( and ( diamond miners ) ) ) ) ( on ( strike ( in ( South Africa ) ) ) ) ) ( ( are ( being ( ( talked ( about often ) ) ( by ( people ( like ( Jim Lehrer ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Black) (NN gold) (CC and) (NN diamond) (NNS miners)) (PP (IN on) (NP (NP (NN strike)) (PP (IN in) (NP (NNP South) (NNP Africa)))))) (VP (VBP are) (VP (VBG being) (VP (VBN talked) (PP (IN about) (ADVP (RB often))) (PP (IN by) (NP (NP (NNS people)) (PP (IN like) (NP (NNP Jim) (NNP Lehrer)))))))) (. .)))