A person standing outside is using an umbrella in the heavy rain.
Someone is outside.
person is someone. rain is outside.
exists e1 e2 s1 x1 x2 x3 x4 x5.(n_rain(x5) & a_heavy(s1) & Theme(s1,x5) & in(e2,x5) & Theme(e2,x4) & Actor(e2,x1) & v_use(e2) & n_umbrella(x4) & Time(e1,x3) & n_outside(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_person(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_person(x1))