Someone is trying to take a picture at a convention.
he is taking a picture
trying and taking are different
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_take(e2) & at(x2,x3) & n_convention(x3) & n_picture(x2)) & n_person(x1))
exists e1 x1 x2.(n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2))