A man jet boarding.
man is jet boarding
A man jet boarding implies that the man is still jet boarding.
exists x1 x2 x3.(a_topic(x1) & n_boarding(x1) & of(x1,x3) & n_jet(x3) & of(x1,x2) & n_man(x2))
exists p1 x1.(exists x2 x3.((x1 = x2) & n_boarding(x2) & of(x2,x3) & n_jet(x3)) & n_man(x1))