Sample purpose
narrower: High quality measurement
narrower: Systematic study
narrower: Test specific hypothesis
narrower: Completeness check
narrower: Feasibility study
narrower: Characterization
narrower: Assessment
broader: Sample
type: Concept

High quality measurement
type: Concept
broader: Sample purpose

Systematic study
type: Concept
broader: Sample purpose

Test specific hypothesis
type: Concept
broader: Sample purpose

Completeness check
type: Concept
broader: Sample purpose

Feasibility study
type: Concept
broader: Sample purpose

Characterization
type: Concept
broader: Sample purpose

Assessment
type: Concept
broader: Sample purpose

Sample
type: Concept
narrower: Sample purpose