Minor is related to Task. Task is related to Item. Item is part of List. 
Line is a type of Shape. Line is part of Poem. Poem is a type of Art. Art is a different concept from Music. 
Minor <--RelatedTo--> Task <--RelatedTo--> Item --PartOf--> List 
Shape <--IsA-- Line --PartOf--> Poem --IsA--> Art <--DistinctFrom--> Music 