Man reads off of laptop while giving a presentation with a lighted advertisement sign behind him.
The man could not get his laptop turned on to give his presentation.
In the first sentence. the man is using his laptop to give a presentation. In the second sentence, the man could not get his laptop to turn on so he could give a presentation.
exists e1 e2 s1 x1 x2 x3 x4 x5.(while(e1,e2) & with(e2,x4) & behind(x4,x1) & n_male(x1) & n_sign(x4) & of(x4,x5) & n_advertisement(x5) & a_lighted(s1) & Theme(s1,x4) & Theme(e2,x3) & Actor(e2,x1) & v_give(e2) & n_presentation(x3) & r_off(e1) & of(e1,x2) & n_laptop(x2) & Actor(e1,x1) & v_read(e1) & n_man(x1))
exists e1 p1 s1 x1 x2 x3 x4.(n_presentation(x4) & of(x4,x1) & n_male(x1) & n_male(x1) & n_laptop(x3) & of(x3,x1) & n_man(x1) & a_on(s1) & Manner(e1,s1) & Topic(e1,p1) & Actor(e1,x1) & v_turn(e1) & exists e4.(Theme(e4,x4) & Actor(e4,x1) & v_give(e4)) & -exists e2 p2.(exists e3.(Theme(e3,x3) & Actor(e3,x2) & v_get(e3)) & Topic(e2,p2) & Actor(e2,x2) & v_could(e2)) & (x1 = x2))