A bartender mixes drinks into two glasses.
A customer is waiting for their drinks.
A customer doesn't have to be waiting for their drinks to be at a bar.
exists e1 x1 x2 x3.(into(e1,x3) & n_glass(x3) & card_eq_2(x3) & Theme(e1,x2) & Actor(e1,x1) & v_mix(e1) & n_drink(x2) & n_bartender(x1))
exists e1 x1 x2.(for(e1,x2) & n_drink(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_wait(e1) & n_customer(x1))