A soldier is demonstrating how to make an arrest.
This demonstration is being videotaped.
A soldier demonstrating an arrest does not imply that the demonstration is being videotaped.
exists e1 x1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_demonstrate(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_make(e2) & n_arrest(x4)) & n_soldier(x1))
exists e1 x1.(n_demonstration(x1) & Theme(e1,x1) & v_videotape(e1))