A man at a mic playing a piano and keyboard.
A man is walking to the store.
Playing a piano is contradictory to walking to the store.
exists x1 x2 x3.(a_topic(x1) & at(x1,x2) & subset_of(x3,x2) & n_keyboard(x3) & all x4.(n_piano(x4) -> exists s1 x5.(subset_of(x5,x2) & for(x5,x4) & n_playing(x5) & a_mic(s1) & Theme(s1,x5))) & n_man(x1))
exists e1 x1 x2.(n_store(x2) & to(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))