premise: of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced
hypothesis: a specific type of catalysis is milk chocolate, defined as 'chocolate made from chocolate liquor with sugar and cocoa butter and powdered milk solids and vanilla and (usually) lecithin; the most common form of chocolate for eating; used in chocolate candy and baking and coatings' .