<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pl2psv(plane):
 """ Return a point and two orthogonal spanning vectors that generate a specified plane. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/pl2psv_c.html :param plane: A SPICE plane. :type plane: supporttypes.Plane :return: A point in the input plane and two vectors spanning the input plane. :rtype: tuple """

    assert (isinstance(plane, stypes.Plane))
    point = stypes.emptyDoubleVector(3)
    span1 = stypes.emptyDoubleVector(3)
    span2 = stypes.emptyDoubleVector(3)
    libspice.pl2psv_c(ctypes.byref(plane), point, span1, span2)
    return stypes.cVectorToPython(point), stypes.cVectorToPython(
            span1), stypes.cVectorToPython(span2)