In academic evaluations, the overall claim or judgment is backed up by smaller, more detailed judgments about aspects of a subject being evaluated. Supporting judgments function in the same way that "reasons" function in most arguments. They provide structure and justification for a more general claim. For example, if your overall claim or judgment in your evaluation is
"Although La Cocina is not without its faults, it is the best Mexican restaurant in town,"
one supporting judgment might be
"La Cocina's green chile is superb."
This judgment would be based on criteria you have established, and it would be supported by evidence.
Providing more parking spaces near buildings is not the only act necessary to solve Taiwan's parking problems. A combination of more parking spaces, increased fines, and lowered traffic volume may be necessary to eliminate the nightmare of driving in the cities. In fact, until laws are enforced and fines increased, no number of new parking spaces will impact the congestion seen in downtown areas.
There are arguably three supporting judgments being made here, as three possible solutions are being suggested to rectify this problem of parking in Taiwan. If we were reading these supporting judgments at the beginning of an essay, we would expect the essay to discuss them in depth, pointing out evidence that these proposed solutions would be effective.