Assertion list for term "serve as base".

Results from Ascent++: 6
class CapableOfserve as base 0.48
town CapableOfserve as base 0.45
airport CapableOfserve as base 0.44
implant CapableOfserve as base 0.36
coating CapableOfserve as base 0.25
space station CapableOfserve as base 0.25