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: Progressive Era | Statement: [William Rutherford Mead, era, Progressive Era]

Target entity: Progressive Era
Context triple: [William Rutherford Mead, era, Progressive Era]

• A. Progressive Era chosen
  The Progressive Era was a period of widespread social activism and political reform in the United States, roughly from the 1890s to the 1920s, aimed at addressing problems caused by industrialization, urbanization, and political corruption.
• B. Gilded Age
  The Gilded Age was a late 19th-century period in the United States marked by rapid industrialization, vast wealth accumulation, stark social inequality, and influential business magnates like Andrew Carnegie.
• C. Republican era
  The Republican era was the period in Chinese history from the 1911 Xinhai Revolution to the establishment of the People’s Republic in 1949, marked by the rule of the Republic of China and significant political fragmentation, warlordism, and social transformation.
• D. The National Era
  The National Era was a 19th-century American abolitionist newspaper best known as the original serial publisher of Harriet Beecher Stowe's "Uncle Tom's Cabin."
• E. Jacksonian era
  The Jacksonian era was a period in early 19th-century United States history marked by the presidency of Andrew Jackson, the expansion of white male suffrage, and aggressive policies of westward expansion and Indian removal.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.