id	keyword
american_scientific_journal-1402	� 𝑅𝑅
american_scientific_journal-1402	� �
american_scientific_journal-1402	𝑅𝑅 𝑙𝑙
american_scientific_journal-1402	𝐴𝐴2 𝑅𝑅
american_scientific_journal-1402	𝜃𝜃 �