Plunge is related to Activity. Works is a type of Activity. Works is related to Steel. 
Money is related to Wage. Found is a type of Wage. Found is the opposite of Dissolve. 
Plunge <--RelatedTo--> Activity <--IsA-- Works <--RelatedTo--> Steel 
Money <--RelatedTo--> Wage <--IsA-- Found <--Antonym--> Dissolve 