Table:
text: Special cities of Japan
Former special cities now core or designated cities
Former special cities now core or designated cities
Name_ Japanese Date_of_designation Date_of_reclassification Region Prefecture
Hakodate 函館 2000-11-01 2005-10-01 ( Core city ) Hokkaido Hokkaido
Shimizu 清水 2001-04-01 2003-04-01 (merge into Shizuoka ) Chūbu Shizuoka
Shimonoseki 下関 2002-04-01 2005-02-12 ( Core city ) Chūgoku Yamaguchi
Morioka 盛岡 2000-11-01 2008-04-01 ( Core city ) Tōhoku Iwate
Kurume 久留米 2001-04-01 2008-04-01 ( Core city ) Kyushu Fukuoka
Maebashi 前橋 2001-04-01 2009-04-01 ( Core city ) Kantō Gunma
Ōtsu 大津 2001-04-01 2009-04-01 ( Core city ) Kansai Shiga
Amagasaki 尼崎 2001-04-01 2009-04-01 ( Core city ) Kansai Hyōgo
Takasaki 高崎 2001-04-01 2011-04-01 ( Core city ) Kantō Gunma
Toyonaka 豊中 2001-04-01 2012-04-01 ( Core city ) Kansai Osaka

Question: Which Japanese prefecture is Iwate in former special cities, now core or designated cities?