Four young men are constructing a bench while others work on different projects in a tropical area.
Some men are volunteering their time for the homeless.
One cannot assume that the four young men are volunteering their time for the homeless.
exists e1 p1 s1 x1 x2 x5.(n_project(x5) & exists e2 s2 x3 x4 x6.(in(e2,x6) & n_area(x6) & a_tropical(s2) & Theme(s2,x6) & on(e2,x4) & -(x4 = x5) & n_project(x4) & Actor(e2,x3) & v_work(e2) & -(x3 = x1) & n_person(x3)) & n_person(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_construct(e1) & n_bench(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_homeless(x3) & Theme(e1,x2) & Actor(e1,x1) & v_volunteer(e1) & for(x2,x3) & n_time(x2) & of(x2,x1) & n_thing(x1) & n_man(x1))