Man in blue shirt is taking photograph.
The man is a photographer.
Just because a man is taking a photographer, it cannot be inferred that he is a photographer.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_photograph(x3) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_photographer(x2)))