fof(goal, conjecture,(![P1,P2,A,B,L]:((plane(P1)&plane(P2)&point(A)&P1!=P2&inc_po_pl(A,P1)&inc_po_pl(A,P2)&point(B)&A!=B&inc_po_pl(B,P1)&inc_po_pl(B,P2)&line(L)&inc_po_l(A,L)&inc_po_l(B,L))=>(inc_l_pl(L,P1)&inc_l_pl(L,P2))))).
