| http://www.w3.org/ns/prov#value | - Such a base is, for example, an organic amine base such as, for example, pyridine, 2,6-lutidine, collidine, 4-dimethylaminopyridine, triethylamine, tetramethylguanidine, morpholine, N-methylmorpholine or diazabicyclo[5,4.0]undec-7-ene, or for example, an alkali metal or alkaline earth metal carbonate or hydroxide, for example sodium carbonate, potassium carbonate, calcium carbonate, sodium hydroxi
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