This is the 2581st most frequent Japanese word.
岩手日日新聞社
"Iwate Nichi Nichi Shimbunsha" is a newspaper company based in Iwate, Japan.
In this sentence, 岩手日日新聞社 is used as the subject to represent the company that reports on the news.
岩手日日新聞社は地元のニュースを詳しく報道しています。
Iwate Nippo Newspaper Company reports local news in detail.
Here, 岩手日日新聞社 is used to specify the source of the articles being read.
私は毎朝、岩手日日新聞社の記事を読んでいます。
I read articles from Iwate Nippo Newspaper Company every morning.
In this sentence, 岩手日日新聞社 indicates the location of employment for the person.