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(1) What is the symbol of boiling_point 20.271?
(2) What is the symbol of boiling_point 3538?
(3) What is the symbol of boiling_point ?
(4) What is the symbol of boiling_point 1757?
(5) What is the symbol of boiling_point 27.104?
(6) What is the symbol of boiling_point 3680?
(7) What is the symbol of boiling_point 2944?
(8) What is the symbol of boiling_point 239.11?
(9) What is the symbol of boiling_point 90.188?
(10) What is the symbol of boiling_point 2743?