6. A method for processing a user query to retrieve multimedia contents, comprising: receiving a query for retrieving multimedia contents from a user; representing the user query by using an indicator for indicating a specific region of an MPEG-7 document and a reference for referring to the indicator, wherein the indicator includes: an indicator ID code used for the reference to refer to the indicator, an indicator region descriptor for describing the region indicated by the indicator, and an indicator limiting descriptor for describing a condition limiting the region indicated by the indicator.
6. A method for processing a user query to retrieve multimedia contents, comprising: receiving a query for retrieving multimedia contents from a user; representing the user query by using an indicator for indicating a specific region of an MPEG-7 document and a reference for referring to the indicator, wherein the indicator includes: an indicator ID code used for the reference to refer to the indicator, an indicator region descriptor for describing the region indicated by the indicator, and an indicator limiting descriptor for describing a condition limiting the region indicated by the indicator. 7. The method of claim 6 , wherein the indicator region descriptor for designating designates an uppermost node of the region indicated by the indicator.