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: Mercury Seven astronaut group | Statement: [Marlene Slayton, associatedWith, Mercury Seven astronaut group]

Target entity: Mercury Seven astronaut group
Context triple: [Marlene Slayton, associatedWith, Mercury Seven astronaut group]

• A. Mercury Seven chosen
  Mercury Seven were the first group of American astronauts, chosen in 1959 to pioneer NASA’s manned spaceflight efforts during the early Space Race.
• B. NASA Astronaut Group 1
  NASA Astronaut Group 1 was the original group of seven U.S. astronauts selected in 1959, known as the Mercury Seven, who pioneered America’s first human spaceflights.
• C. NASA Astronaut Group 6
  NASA Astronaut Group 6 was a 1967 class of NASA astronauts that included several future Apollo lunar mission crew members.
• D. NASA Astronaut Group 3
  NASA Astronaut Group 3 was a 1963 class of American astronauts whose members went on to play key roles in the Apollo lunar missions and later U.S. space programs.
• E. NASA Astronaut Group 5
  NASA Astronaut Group 5 was a 1966 class of American astronauts that provided many of the crew members for later Apollo lunar missions and early Skylab flights.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.