Scientific is derived from Science. Science is related to Lab. you are likely to find Scale in/at/on Lab. Scale is related to Ladder. 
Brain is a type of Kill. Machine can be used for Kill. Machine is related to Eye. Eye is related to Party. 
Scientific --DerivedFrom--> Science <--RelatedTo--> Lab <--AtLocation-- Scale <--RelatedTo--> Ladder 
Brain --IsA--> Kill <--UsedFor-- Machine <--RelatedTo--> Eye <--RelatedTo--> Party 