Answer:
A relationship within a single independent clause.
Explanation:
An independent clause is a clause or a group of words that can stand on its own as a full sentence. It requires no dependent clause of other words to be accepted or taken as a meaningful thought. 
Independent clauses are full-fledged sentences that contain a subject and a predicate. Moreover, it can be joined to another independent clause or a dependent clause to be made into a sentence while also standing alone as a sentence on its own.
The given sentence is an independent clause with no extra independent clause or a dependent clause added to it. Therefore, it is a single independent clause. 
 
        
                    
             
        
        
        
In the myth of Theseus<span> and the Minotaur, the character </span>archetype<span> for </span>Theseus<span> is, “The Hero”. </span>Theseus<span> undergoes a Journey to go rescue his father and all of Athens. Thankfully, </span>Theseus<span> is a smart and courageous man as he takes on a difficult and dangerous road to follow the path of the great hero, Hercules.</span>
        
             
        
        
        
common noun _ is non specific
proper noun _ is a specific noun