Female black belt martial artists performs outside on a gray day with weapon on a mat while spectators and other martial artists including 3 children look on.
The woman is a black belt.
Two female black belt expert is being referred as black belt martial artists.
exists e1 p1 s1 s2 s3 s5 x1 x2 x3 x4 x5 x6 x7.(exists e2 p2 s4 x8 x9 x10 x11.(exists s6.(Theme(s6,x8) & a_on(s6)) & Topic(e2,p2) & Actor(e2,x8) & v_look(e2) & include(x8,x11) & n_child(x11) & n_date(x11) & a_date_day_03(x11) & a_date_day_03(x11) & subset_of(x10,x8) & -(x10 = x1) & n_artist(x10) & a_martial(s4) & Theme(s4,x10) & subset_of(x9,x8) & n_spectator(x9)) & n_artist(x1) & n_artist(x1) & a_martial(s5) & Theme(s5,x1) & while(e1,p1) & on(e1,x5) & with(x5,x6) & on(x6,x7) & n_mat(x7) & n_weapon(x6) & n_day(x5) & a_gray(s3) & Theme(s3,x5) & a_outside(s2) & Manner(e1,s2) & Actor(e1,x1) & v_perform(e1) & of(x1,x4) & n_martial(x4) & of(x1,x3) & n_belt(x3) & a_black(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_female(x2))
exists p1 x1.(n_woman(x1) & exists s1 x2.((x1 = x2) & n_belt(x2) & a_black(s1) & Theme(s1,x2)))