A girl in a white dress is posing as a ballerina.
A girl in a white dress is posing as a ballerina for fun.
You can not infer it is for fun.
exists e1 s1 x1 x2 x3.(as(e1,x3) & n_ballerina(x3) & Actor(e1,x1) & v_pose(e1) & in(x1,x2) & n_dress(x2) & a_white(s1) & Theme(s1,x2) & n_girl(x1))
exists e1 s1 x1 x2 x3 x4.(as(e1,x3) & for(x3,x4) & n_fun(x4) & n_ballerina(x3) & Actor(e1,x1) & v_pose(e1) & in(x1,x2) & n_dress(x2) & a_white(s1) & Theme(s1,x2) & n_girl(x1))