Four people are sitting behind a table full of food.
A man sits alone at a table full of food.
If a man sits alone, there is only one person and not four people.
exists e1 s1 x1 x2 x3 x4.(behind(e1,x2) & of(s1,x4) & n_food(x4) & Theme(s1,x3) & a_full(s1) & (x2 = x3) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))
exists e1 s1 s2 x1 x2 x3 x4.(at(e1,x2) & of(s2,x4) & n_food(x4) & Theme(s2,x3) & a_full(s2) & (x2 = x3) & n_table(x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))