Two dogs play together while their owners watch.
Two dogs ignore one another while their owners drink beer
Dogs cannot play together and ignore one another at the same time.  Their owners probably aren't watching and drinking beer at the same time.
exists e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_watch(e2) & n_thing(x4) & while(e1,x3) & n_owner(x3) & of(x3,x1) & n_thing(x1) & a_together(s1) & Manner(e1,s1) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists e1 p1 s1 x1 x2 x3.(exists e2 x4.(Theme(e2,x4) & Actor(e2,x3) & v_drink(e2) & n_beer(x4)) & n_owner(x3) & of(x3,x1) & n_thing(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_ignore(e1) & n_thing(x2) & card_eq_1(x2) & a_another(s1) & Theme(s1,x2) & n_dog(x1) & card_eq_2(x1))