sentences: if a 30 combining something into something else then that neutral is a sink of that something else
docs: neutralizing is conflict. chemically_neutral_substance is tangible_thing. idiom_neutral is artificial_language. neutral_solution is chemically_neutral_substance. neutral is person. equal is artificial_substance. idiom_neutral is language. neutral_solution is liquid_solution. neutralization is chemical_reaction. cr_2 is inorganic_substance.