A person holding a bike a sunny day.
A man holds a skateboard on a cloudy day
The man either holds a skateboard or he can be holding a bike.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & n_day(x4) & a_sunny(s1) & Theme(s1,x4) & Time(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_bike(x3) & (x1 = x2) & n_person(x1))
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_day(x3) & a_cloudy(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_skateboard(x2) & n_man(x1))