A man wearing glasses is staring off into space.
A man is staring off into space, as the class he is taking is boring.
Staring off into space does not imply that he is taking a boring class.
exists e1 e2 s1 x1 x2 x3 x4.(a_off(s1) & Manner(e2,s1) & into(e2,x4) & n_space(x4) & Actor(e2,x1) & v_stare(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2) & n_man(x1))
exists e1 p1 s1 x1 x2 x3.(n_male(x3) & n_class(x3) & exists e2 s2 x4.(Theme(s2,x3) & a_boring(s2) & Theme(e2,x4) & Actor(e2,x3) & v_take(e2) & (x3 = x4)) & as(e1,p1) & a_off(s1) & Manner(e1,s1) & into(e1,x2) & n_space(x2) & Actor(e1,x1) & v_stare(e1) & n_man(x1))