A male is wearing a black t-shirt while playing a bass guitar in a concert.
The man is wearing a green tee shirt as he plays the drum at the concert.
The man cannot simultaneously be wearing a black shirt as he plays the guitar and wearing a green shirt as he plays the drums.
exists e1 e2 s1 x1 x2 x3 x4 x5.(while(e1,e2) & in(e2,x5) & n_concert(x5) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_guitar(x3) & of(x3,x4) & n_bass(x4) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_t-shirt(x2) & a_black(s1) & Theme(s1,x2) & n_male(x1))
exists e1 p1 s1 x1 x2 x3 x4 x5.(n_concert(x5) & n_drum(x4) & n_male(x1) & n_man(x1) & exists e2.(Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & at(x4,x5)) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_shirt(x2) & of(x2,x3) & n_tee(x3) & a_green(s1) & Theme(s1,x2))