Portland is a small town, and political Portland is even smaller. At the annual dinner of the Japan-America Society of Oregon, held last night at the Benson Hotel, the master of ceremonies was Sho Dozono, who ran unsuccessfully for mayor last year. Among his tasks was to introduce the head table to the dinner guests, including, at one end of the table, the man who beat him in the election, Sam Adams. Mr. Dozono handled his introductory duties with distinction, though an eyebrow or two went up when he introduced Mr. Adams, barely stressing the word, as "our current mayor."