if something is soluble in something , then that something can be dissolved in something forming a problem
solubility is measurable_quantity. if_water is very_cold_then_ice. dullness is stupidity. tiredness is force_of_mistakisms. water_soluble_substance is tangible_thing. detergent is water_soluble_substance. water_soluble_vitamin is vitamin. mixture is substance. rna is organic_matter. sugar is water_soluble_substance.