of tag information illustrated in fig. 5b, both “automobile” and “car” would be placed in the same category. further, given that a “sports car” is a more specific concept relative to “automobile” and “car”, the “sports car” can also be placed in the same category as the “automobile” and the “car”. in contrast, a “park” is a different concept than an “automobile” and is therefore placed in a different category. note that a “motor show” is a concept related to an “automobile” and the like, and so may be place in the same category, or placed in a different category. in this example, the “motor show” and the “automobile” are 