These people are doing dangerous things.
There are people doing completely safe activities.
It cannot be inferred that all the people within this scenario are doing dangerous things. There are other who are doing safe activities.
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 x1 e1 s1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_activity(x4) & a_safe(s1) & Theme(s1,x4) & r_completely(x4) & (x2 = x3) & n_people(x2))