For example, those who intend to improve the quality of hotel A may investigate representative values for "Aspect" in the units satisfying "Target=hotel A & Polarity=negative", while those who look for accommodation may collect the opinion units for one or more candidate hotels and investigate the distribution of values for "Polarity" on an aspect-by-aspect basis.
in the above example (1), the evaluation for hotel A ("a reasonable price") is valid for "if you take a family trip with small kids", and thus it is not clear whether this evaluation is valid irrespective of the condition.