A man dressed in martial arts clothing is breaking a piece of wood with his foot as other students watch.
A karate instructor is demonstrating a technique to his students.
A man in martial arts clothing is not necessarily a karate instructor. A man in martial arts clothing and breaking a piece of wood with his foot is not necessarily demonstrating a technique.
exists e1 e3 e2 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11.(n_student(x10) & a_topic(x1) & Theme(e3,x11) & Actor(e3,x6) & v_watch(e3) & (x1 = x11) & as(x6,x9) & -(x9 = x10) & n_student(x9) & with(x6,x8) & n_foot(x8) & of(x8,x1) & n_male(x1) & of(x6,x7) & n_wood(x7) & n_piece(x6) & in(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_break(e2) & (x3 = x5) & n_clothing(x4) & n_art(x3) & a_martial(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_demonstrate(e1) & to(x2,x3) & n_student(x3) & of(x3,x1) & n_male(x1) & n_technique(x2) & n_instructor(x1) & a_karate(s1) & Theme(s1,x1))