Indicator is derived from Indicate. Indicate is a synonym of Display. Sight is a type of Display. Sight is a synonym of Sense. 
Involve is a type of Admit. Admit is related to Fault. Fault is related to Spark. Spark is a synonym of Beginning. 
Indicator --DerivedFrom--> Indicate <--Synonym--> Display <--IsA-- Sight <--Synonym--> Sense 
Involve --IsA--> Admit <--RelatedTo--> Fault <--RelatedTo--> Spark <--Synonym--> Beginning 