A singer performs with his band mates who are playing guitar and keyboards.
A singer watches while his band mates play the drums and the trumpet
One cannot watch and perform simultaneously. It can either be a guitar and keyboards or drums and a trumpet.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(with(e1,x2) & Theme(e2,x5) & Actor(e2,x4) & v_play(e2) & subset_of(x7,x5) & n_keyboard(x7) & subset_of(x6,x5) & n_guitar(x6) & (x2 = x4) & n_mate(x2) & of(x2,x3) & n_band(x3) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_perform(e1) & n_singer(x1))
exists e1 p1 x1 x2 x4 x5.(n_trumpet(x5) & n_drum(x4) & exists e2 p2.(exists e3 x3.(Theme(e3,x3) & Actor(e3,x2) & v_play(e3) & subset_of(x5,x3) & subset_of(x4,x3)) & Topic(e2,p2) & Actor(e2,x2) & v_mate(e2)) & n_band(x2) & of(x2,x1) & n_male(x1) & while(e1,p1) & Actor(e1,x1) & v_watch(e1) & n_singer(x1))