a couple is kissing in a field of flowers and the man is taking a picture of it as they are kissing.
A brother and sister are talking together on a couch.
A brother and sister wouldn't be a couple, kissing and talking are different actions, and a couch is not found in a field.
exists e1 e2 p1 x1 x2 x3 x4 x5.(n_thing(x4) & n_thing(x4) & n_man(x4) & exists e3.(Actor(e3,x4) & v_kiss(e3)) & as(e2,p1) & Theme(e2,x5) & Actor(e2,x4) & v_take(e2) & of(x5,x4) & n_picture(x5) & in(e1,x2) & of(x2,x3) & n_flower(x3) & n_field(x2) & Actor(e1,x1) & v_kiss(e1) & n_couple(x1))
exists e1 s1 x1 x2 x3 x4.(a_together(s1) & Manner(e1,s1) & on(e1,x4) & n_couch(x4) & Actor(e1,x1) & v_talk(e1) & n_sister(x3) & n_brother(x2) & subset_of(x3,x1) & subset_of(x2,x1))