sentence2_structure: A carbon atom with 6 protons and 8 neutrons<>is<>more specifically known as carbon 14$$$A carbon atom with 6 protons and 8 neutrons<>more specifically known<>as carbon 14
sentence1: The atomic masses in the periodic chart are based on carbon having 12 nuclear residents (6 protons and 6 neutrons).
sentence2: A carbon atom with 6 protons and 8 neutrons is more specifically known as carbon 14.
question: A carbon atom with 6 protons and 8 neutrons is more specifically known as?