Assertion list for term "flow to the surface".

Results from Ascent++: 7
gas CapableOfflow to the surface 0.46
lava CapableOfflow to the surface 0.42
magma CapableOfflow to the surface 0.38
natural gas CapableOfflow to the surface 0.37
heat CapableOfflow to the surface 0.36
water (aspect of aquifer) CapableOfflow to the surface 0.29
hydrocarbon CapableOfflow to the surface 0.29