An old man is grilling food in a backyard.
The old man shopped for a new backyard grill at Sears.
Grilling is present tense while shopped is past tense and a man cannot be in a backyard and at Sears simultaneously.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_backyard(x3) & Theme(e1,x2) & Actor(e1,x1) & v_grill(e1) & n_food(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2 x3 x4.(ne_geo_sears(x4) & n_man(x1) & a_old(s1) & Theme(s1,x1) & for(e1,x2) & at(x2,x4) & n_grill(x2) & of(x2,x3) & n_backyard(x3) & a_new(s2) & Theme(s2,x2) & Actor(e1,x1) & v_shop(e1))