| http://www.w3.org/ns/prov#value | - 1) Tends equipment that mixes ingredients for use in producing margarine: Turns valve to admit liquid ingredients, such as water or milk, into mixing vat. 2) Dips measuring stick into vat and closes valve when liquid reaches specified level. 3) Weighs specified quantities of dry ingredients, such as salt and powdered milk, and empties ingredients into vat. 4) Starts agitator to mix liquid and powd
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