A group of people are attending a conference.
A group of people discuss the next work project.
People attending a conference not necessarily discuss.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_attend(e1) & n_conference(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(n_project(x3) & of(x3,x4) & n_work(x4) & a_next(s1) & Theme(s1,x3) & Theme(e1,x3) & Actor(e1,x1) & v_discuss(e1) & of(x1,x2) & n_people(x2) & n_group(x1))