A man playing an instrument while others sit at a table and watch.
The man is eating food at a restaurant.
A man cannot be eating food and playing an instrument simultaneously.
exists e1 p1 x1 x2 x3.(a_topic(x1) & exists e2 x4 x5 x6 x7.(at(e2,x5) & n_watch(x7) & n_table(x6) & subset_of(x7,x5) & subset_of(x6,x5) & Actor(e2,x4) & v_sit(e2) & -(x4 = x1) & n_person(x4)) & n_person(x1) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_instrument(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists s1 x2 x3.((x1 = x2) & at(x2,x3) & n_restaurant(x3) & n_food(x2) & a_eating(s1) & Theme(s1,x2)))