These people are doing dangerous things.
it is dangerous to be doing the things these people are doing.
people are doing dangerous things is same as dangerous to be doing the things these people are doing
exists e1 s1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_thing(x2) & a_dangerous(s1) & Theme(s1,x2))
exists p1 s1 x1 x3.(n_people(x3) & n_thing(x1) & n_thing(x1) & Topic(s1,p1) & exists e2 e1 x2 x4.(Theme(e2,x1) & Actor(e2,x2) & v_do(e2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & (x1 = x4)) & Theme(s1,x1) & a_dangerous(s1))