Martial arts students practice outside building.
Martial arts students are reading poetry by the fire.
They cannot be practicing outside building and reading poetry by the fire.
exists e1 p1 x1 x2.(ne_nam_martial(x1) & exists e2 s1 x3.(Theme(e2,x3) & Actor(e2,x2) & v_practice(e2) & n_building(x3) & a_outside(s1) & Theme(s1,x3)) & Recipient(e1,p1) & Actor(e1,x1) & Topic(e1,x2) & v_art(e1) & n_student(x2))
exists e1 x1 x2 x3 x4 x5.(n_fire(x5) & by(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_read(e1) & n_poetry(x4) & n_student(x1) & of(x1,x3) & n_art(x3) & (x1 = x2) & ne_nam_martial(x2))