People talking at an event in a park.
The people are inside.
People cannot be in a park and inside.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_park(x4) & at(e1,x3) & n_event(x3) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_people(x1))
exists e1 s1 x1.(n_people(x1) & a_inside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_be(e1))