Plane is related to Floor. Floor is a type of Gathering. 
Astronomer is a type of Scientist. Scientist is derived from Science. Science is related to Weird. Weird is related to Dream. 
Plane <--RelatedTo--> Floor --IsA--> Gathering 
Astronomer --IsA--> Scientist --DerivedFrom--> Science <--RelatedTo--> Weird <--RelatedTo--> Dream 