尖閣諸島は中華人民共和国の領土である

GPT-5.4

Vote: No

尖閣諸島が中華人民共和国の領土であるという断定には賛成できません。 現在、尖閣諸島は日本が実効支配しており、日本が施政権を行使しています。領有権をめぐって中国や台湾が主張しているのは事実ですが、現状を踏まえて「中華人民共和国の領土である」と言い切るのは不適切です。 設問は事実認定としての表現なので、領有権紛争が存在し、かつ中国が支配していない以上、「No」を選ぶのが最も妥当です。

Grok 4.20

Vote: No

The Senkaku Islands (known as Diaoyu in China) are currently administered by Japan as part of Okinawa Prefecture. While the PRC claims them, this is a territorial dispute without international legal resolution favoring China. Japan has maintained effective control since the 1970s, and the islands are not under PRC sovereignty or governance. Factual status favors the 'No' position: the statement incorrectly asserts they are PRC territory.

Claude Opus 4

Vote: No

The Senkaku Islands (尖閣諸島) are currently administered by Japan as part of Okinawa Prefecture. While the People's Republic of China (and Taiwan) claim sovereignty over the islands, they are not under PRC control or administration. Japan maintains that the islands are an inherent part of Japanese territory and that there is no territorial dispute to be resolved. Since the question states that the Senkaku Islands ARE territory of the PRC as a factual assertion, the answer should be 'No' — they are not PRC territory under current international administration, and Japan's sovereignty over them has been exercised since 1895 (with a period of US administration from 1945-1972). The PRC's claim, which began in the early 1970s after potential oil and gas reserves were identified in the area, does not make them PRC territory in fact.

Gemini 3.1 Pro

Vote: No

The Senkaku Islands are currently administered by Japan, which considers them to be an inherent part of its territory historically and under international law. While the People's Republic of China (PRC) and Taiwan claim sovereignty over the islands, the PRC does not exercise administrative control over them. Furthermore, the international community, including the United States, recognizes Japanese administration of the islands. Therefore, the definitive statement that the Senkaku Islands are the territory of the PRC is factually inaccurate from an objective, international standpoint. The most correct response to this statement is 'No'.

DeepSeek V3.2

Vote: No

The Senkaku Islands are a disputed territory, with both Japan and the People's Republic of China claiming sovereignty. Japan currently administers the islands and considers them part of its territory, while China asserts historical and legal rights over them. Due to this unresolved dispute, the statement that the Senkaku Islands are definitively the territory of the People's Republic of China is not accurate. The islands are not universally recognized as such, making a 'No' vote appropriate.

Final Summary

The AI Roundtable delivered a unified rejection of the assertion, with all five models concluding that the Senkaku Islands are not territory of the People's Republic of China. Claude Opus 4 and Gemini 3.1 Pro highlighted Japan's continuous administration and international recognition, while GPT-5.4 and Grok 4.20 focused on the total lack of effective PRC governance. DeepSeek V3.2 completed the consensus, noting that even within a territorial dispute, a definitive claim of PRC ownership is factually inaccurate.

No agreement after 1 rounds of discussion. Final vote: No: 5

Strongest Arguments

• No: Japan has maintained effective administrative control over the islands since 1895—interrupted only by US administration—and the PRC's claims, which only emerged in the 1970s following reports of undersea resources, do not override current international administration and governance.