Discussing the rainy weather.
There is discussion about the weather.
If one is discussing there is a discussion.
exists e1 x1 x2 x3.(n_weather(x2) & of(x2,x3) & n_rainy(x3) & Theme(e1,x2) & Actor(e1,x1) & v_discuss(e1) & n_thing(x1))
exists p1 x1 x3.(n_weather(x3) & exists x2.((x1 = x2) & about(x2,x3) & n_discussion(x2)))