geometry
MULTILINESTRING ZM ((30 10 40 300, 10 30 40 300, 40 40 80 1600))
MULTILINESTRING ZM ((10 10 20 100, 20 20 40 400, 10 40 50 400), (40 40 80 1600, 30 30 60 900, 40 20 60 800, 30 10 40 300))

MULTILINESTRING ZM EMPTY