A man from China lifts heavy weights at the 2012 Olympics.
A Mexican man is making tacos.
A man cannot lift heavy weights and be making tacos at the same time.
exists e1 s1 x1 x2 x3 x4.(n_olympics(x4) & n_date(x4) & a_date_year_2012(x4) & a_date_year_2012(x4) & ne_geo_china(x2) & at(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_lift(e1) & n_weight(x3) & a_heavy(s1) & Theme(s1,x3) & from(x1,x2) & n_man(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_taco(x2) & n_man(x1) & a_mexican(s1) & Theme(s1,x1))