fof(ax_I7,axiom,(![P1,P2,A]:((plane(P1)&plane(P2)&point(A)&P1!=P2&inc_po_pl(A,P1)&inc_po_pl(A,P2))=>(?[B]:(point(B)&A!=B&inc_po_pl(B,P1)&inc_po_pl(B,P2)))))).
