premises
#ax_I5

point(1)
point(2)
point(3)
plane(4)
plane(5)
~col(1, 2, 3)
inc_po_pl(1, 4)
inc_po_pl(2, 4)
inc_po_pl(3, 4)
inc_po_pl(1, 5)
inc_po_pl(2, 5)
inc_po_pl(3, 5)

conclusions

eq_plane(4, 5)

