People looking at a birthday cake with candles lit trying to blow them out.
People are celebrating grandma's birthday.
Just because people are looking at a birthday cake it does not mean they are celebrating grandma's birthday.
exists e2 e1 p1 x1 x2 x3 x4 x5.(exists e3 p2.(Topic(e3,p2) & Actor(e3,x1) & v_try(e3) & exists e4 s1.(a_out(s1) & Manner(e4,s1) & Theme(e4,x3) & Actor(e4,x1) & v_blow(e4))) & n_thing(x3) & Topic(e2,p1) & Actor(e2,x1) & v_light(e2) & at(e1,x3) & with(x3,x5) & n_candle(x5) & n_cake(x3) & of(x3,x4) & n_birthday(x4) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_celebrate(e1) & n_birthday(x3) & of(x3,x2) & n_grandma(x2) & n_people(x1))