(3 Jun 1996) T/I: 10:47:36 GS 10:17:08 Anatoly Sobchak, mayor of Russia's second largest city Saint Petersburg, has narrowly lost to his former deputy Vladimir Yakovlev in the second round of mayoral elections on Sunday (2/6). SHOWS ST. PETERSBURG, RUSSIA 3/6 gv's of st. petersburg; ws of electoral commission; electoral commission official Russian SOT confirming that Yakovlev, Sobchak's one-time deputy, held a lead of 1.7%. Yakolev Russian SOT at press conference saying Sobchak had completed