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: Carbon 12, the stable form, has 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?