A man and a woman at an outing talking to each other.
A man and a woman talk to eachother while walking in the park.
They may not be walking in an actual park.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & all x5.(n_other(x5) -> to(e1,x5)) & Actor(e1,x4) & v_talk(e1) & (x2 = x4) & at(x2,x3) & n_outing(x3) & n_woman(x2) & subset_of(x1,s1) & n_man(x1))
exists p1 s1 x1 x2 x3 x4.(n_park(x4) & a_topic(s1) & subset_of(x2,s1) & Topic(x2,p1) & exists e2 e1.(while(e1,e2) & in(e2,x4) & Actor(e2,x2) & v_walk(e2) & Actor(e1,x2) & v_eachother(e1)) & n_talk(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))