Hippie jam band guitarist rocks out with keytar player in background.
The keytar player is also the lead singer.
The lead singer would not be in the background of the stage.
exists x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & with(x6,x7) & in(x7,x9) & n_background(x9) & n_player(x7) & of(x7,x8) & n_keytar(x8) & out(x1,x6) & n_thing(x6) & n_rock(x1) & of(x1,x5) & n_guitarist(x5) & of(x1,x4) & n_band(x4) & of(x1,x3) & n_jam(x3) & (x1 = x2) & ne_nam_hippie(x2))
exists p1 s1 x1 x2 x3 x4.(n_singer(x3) & of(x3,x4) & n_lead(x4) & n_player(x1) & of(x1,x2) & n_keytar(x2) & a_also(s1) & Manner(p1,s1) & (x1 = x3))