Captain is related to Operator. Operator is related to Driver. Driver is related to Wheel. Wheel can be used for Turn. 
Leading is a form of Lead. Leading is related to Rule. Rule is related to Follow. 
Captain <--RelatedTo--> Operator <--RelatedTo--> Driver <--RelatedTo--> Wheel --UsedFor--> Turn 
Lead <--FormOf-- Leading <--RelatedTo--> Rule <--RelatedTo--> Follow 