Abstract: In order to provide dialogue management means that allows prompt identification of portions of interest in a dialogue record even in a case where various subjects are discussed, provided is a dialogue management apparatus (210) including a dialogue interface section (212) that provides a dialogue interface for holding a digital dialogue between a plurality of speakers and acquires a dialogue record of the digital dialogue, a subject management section (214) that receives an input of subject designation information for designating a subject in the digital dialogue, while the digital dialogue is being held, and a dialogue editing section (216) that generates an edited dialogue record that is organized by subject, by editing the dialogue record in reference to the subject designation information.

Abstract: A process for producing a polybutadiene is provided wherein, first, 1,3-butadiene is polymerized in the presence of a particular cis-1,4-polymerization catalyst and subsequently, the polymerization is continued in the presence of a particular 1,2-polymerization catalyst. The resulting polybutadiene is characterized as containing 2 to 40% of the 1,2-structure, the melting point of the 1,2-structure portion being 110.degree. to 215.degree.C, and containing 60 to 98% of the cis-1,4-structure and having an intrinsic viscosity [.eta.] of 0.9 to 8 in tetraline at 135.degree.C. A vulcanized product of the polybutadiene is characterized as possessing improved tear strength, flex-crack resistance and tensile strength.