A young man is wearing a backpack and enjoying his ice cream cone.
A young woman drinks a soda.
The subject is either a young man or a young woman, it cannot be both. Ice cream is a food item while soda is a drink.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(Theme(e2,x4) & Actor(e2,x3) & v_enjoy(e2) & n_cone(x4) & of(x4,x6) & n_cream(x6) & of(x4,x5) & n_ice(x5) & of(x4,x1) & n_male(x1) & n_man(x3) & a_young(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_backpack(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
all x1.(n_soda(x1) -> exists s1 x2 x3.(a_topic(x2) & for(x2,x1) & n_drink(x2) & of(x2,x3) & n_woman(x3) & a_young(s1) & Theme(s1,x2)))