Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: early Heian period | Statement: [Emperor Junna, period, early Heian period]

Target entity: early Heian period
Context triple: [Emperor Junna, period, early Heian period]

• A. Heian period chosen
  The Heian period was a classical era of Japanese history (794–1185) marked by an imperial court-centered culture, flourishing literature such as The Tale of Genji, and the development of a distinct Japanese aesthetic.
• B. Nara period
  The Nara period was an era of early Japanese history (710–794) marked by the establishment of a permanent capital at Nara, the flourishing of Buddhism and Chinese-influenced court culture, and the compilation of foundational chronicles and legal codes.
• C. Yamato period
  The Yamato period was an early era of Japanese history (roughly 3rd to 7th century) marked by the political consolidation of the Yamato clan, the emergence of a centralized state, and the introduction of Buddhism and Chinese cultural influences.
• D. Yayoi period
  The Yayoi period was a formative era in Japanese prehistory marked by the introduction of wet-rice agriculture, metal tools, and more complex social structures, preceding the Kofun period.
• E. Shunga period
  The Shunga period was an ancient Indian historical era (c. 2nd–1st century BCE) marked by the Shunga dynasty’s rule and significant developments in Buddhist art and architecture.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.