An ethnic woman smiling while writing at a desk.
a man eats at a table
A man cannot be a woman and both eating at a table and writing at a desk at the same time.
exists e1 e2 s1 x1 x2 x3.(a_topic(x1) & while(e1,e2) & at(e2,x3) & n_desk(x3) & Actor(e2,x2) & v_write(e2) & Actor(e1,x2) & v_smile(e1) & (x1 = x2) & n_woman(x1) & a_ethnic(s1) & Theme(s1,x1))
exists e1 x1 x2.(at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_eat(e1) & n_man(x1))