A man wearing a t-shirt that has "gnu" printed on it gives a technology presentation.
A man is giving a presentation at work.
fives a technology presentation refers to giving a presentation.
exists e4 e2 e3 e1 x1 x2 x3 x4 x5 x6 x7.(Theme(e4,x6) & Actor(e4,x1) & v_give(e4) & n_presentation(x6) & of(x6,x7) & n_technology(x7) & on(e3,x1) & n_thing(x1) & Theme(e3,x5) & v_print(e3) & (x1 = x5) & Theme(e2,x3) & Actor(e2,x2) & v_wear(e2) & Actor(e1,x4) & v_gnu(e1) & (x3 = x4) & n_t-shirt(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(at(e1,x3) & n_work(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & n_presentation(x2) & n_man(x1))