10. A natural language processing system for processing internal conceptual expressions of a computer not in a natural language so that they are converted to a message in a natural language in accordance with the expression form of the message determined to be preferred by a person intended to receive the message, comprising: input means for inputting information expressed by a list of concepts each comprising an internal conceptual expression of a computer not in a natural language that is to be communicated to a person intended to receive a message embodying the concept; a knowledge base having the knowledge of natural languages, general knowledge, and the knowledge of specific domains; linguistic concept generation means for generating a linguistic concept dependent upon language to be added to individual concepts in the list of concepts input from said input means; parameter determination means for determining a parameter for the linguistic concept generated by said linguistic concept generation means; selecting means for determining the expression form of a message embodying the individual concepts preferred by the person intended to receive the message by using data in said knowledge base, the individual concepts and the determined parameter and selecting one natural language expression form of the message from a plurality of possible expression forms embodying the individual concepts in accordance with the determined, preferred expression form of the message; and conversion means for converting the individual concepts into the message embodying the individual concepts in a natural language expression selected by said selecting means.
10. A natural language processing system for processing internal conceptual expressions of a computer not in a natural language so that they are converted to a message in a natural language in accordance with the expression form of the message determined to be preferred by a person intended to receive the message, comprising: input means for inputting information expressed by a list of concepts each comprising an internal conceptual expression of a computer not in a natural language that is to be communicated to a person intended to receive a message embodying the concept; a knowledge base having the knowledge of natural languages, general knowledge, and the knowledge of specific domains; linguistic concept generation means for generating a linguistic concept dependent upon language to be added to individual concepts in the list of concepts input from said input means; parameter determination means for determining a parameter for the linguistic concept generated by said linguistic concept generation means; selecting means for determining the expression form of a message embodying the individual concepts preferred by the person intended to receive the message by using data in said knowledge base, the individual concepts and the determined parameter and selecting one natural language expression form of the message from a plurality of possible expression forms embodying the individual concepts in accordance with the determined, preferred expression form of the message; and conversion means for converting the individual concepts into the message embodying the individual concepts in a natural language expression selected by said selecting means. 11. A system according to claim 10, wherein said parameter determination means includes gender determination means for determining the gender of a noun in a selected natural language expression selected by said selecting means.