... ~ ©~-e~:, #o~ ~ ,~ Iz t~ t ~-c ~, ~. I~, ~-~ , ),.~.f~, . ~-~ , ~-~ , ~l~© ~ ,-~ -e~ ~ ~ L.,= e~_~°, t~.~. & eS~¢)~t~ = M~,I (e) y_,y_z2, Mi, i ~S i ~©~ ~ t~S~ (2) ~9,~.~t~ 2.2A ~_/ ~-~ -t6. ... I 2O [] 2: ~-~ t:~ 6~/~¢ $ © © © © I 8O 100 ~-~ 78.2% 57.7% 25% -: /x ~.h A 72.3% 52.6% 26% -: /;z ~ ~ B 61.7% 39.5% 29% -: /y~ ~.h C 61.4% 40.9% 29% -& gt;" ~ ~- A D 57.5% 42.2% ... t: ~ btz ~ -~ , ~ 78.2%, ~#~ 57.7% ©~ ~6 : k ~, U~=. RIU (Hearst, 1997), ~r+ )-: ~ " b l:°y~ ' ='~ { :-~ -T-~ References R. Brandow, K. Mitze, and L. F. Rau. 1995. Auto- matic Condensation...