Consider points A(1,4, 7), B(2,-1,3), C(3,5,3), A'(2, 3, 5), B'(1, 1, -1) and C'(1,-4,-2). Find a point P and a line h such that triangles ABC and A'B'C' are in perspective from a point P and from the line h, in which A corresponds to A', B corresponds to B' and C corresponds to C'.