Young men listen to a presentation.
Young men listening to a school lecture
The fact that the men are listening to a presentation does not imply that the presentation is a school lecture or any other type of presentation.
exists e1 s1 x1 x2.(to(e1,x2) & n_presentation(x2) & Actor(e1,x1) & v_listen(e1) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & to(e1,x3) & n_lecture(x3) & of(x3,x4) & n_school(x4) & Actor(e1,x2) & v_listen(e1) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))