A man dressed in a military uniform giving a presentation.
A man dressed in military regalia is doing Cosplay.
A man dressed in a military uniform and giving a presentation doesn't mean that man  is doing Cosplay.
exists e1 e2 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_give(e2) & n_presentation(x5) & (x3 = x4) & n_uniform(x3) & a_military(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 e2 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_do(e2) & n_cosplay(x4) & in(e1,x3) & n_regalia(x3) & a_military(s1) & Theme(s1,x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))