Two guys are practicing mixed martial arts on a blue and red mat.
A couple of guys are practicing martial arts on the mat.
The mats the two guys are practicing on is red and blue.
exists e1 s1 s2 s3 s4 x1 x2 x3.(on(e1,x3) & n_mat(x3) & a_red(s4) & Theme(s4,x3) & a_blue(s3) & Theme(s3,x3) & Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_art(x2) & a_martial(s2) & Theme(s2,x2) & a_mixed(s1) & Theme(s1,x2) & n_guy(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(n_mat(x4) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_practice(e1) & n_art(x3) & a_martial(s1) & Theme(s1,x3) & of(x1,x2) & n_guy(x2) & n_couple(x1))