The man in the background is grilling food while the man in the foreground is talking to the camera.
Nobody is talking, and nobody is cooking.
There can be either a man grilling food or nobody cooking. There can be either a man talking to the camera or nobody talking.
exists e1 p1 x1 x2 x3 x4 x5.(n_camera(x5) & n_foreground(x4) & n_man(x1) & n_man(x1) & n_background(x2) & exists e2.(to(e2,x5) & Actor(e2,x1) & v_talk(e2) & in(x1,x4)) & while(e1,p1) & Theme(e1,x3) & Actor(e1,x1) & v_grill(e1) & n_food(x3) & in(x1,x2))
(-exists p1 x2.(exists x3.((x2 = x3) & n_cooking(x3)) & n_person(x2)) & -exists e1 x1.(Actor(e1,x1) & v_talk(e1) & n_person(x1)))