Subgame Perfect Equilibrium
Table:
Subgame Perfect Equilibrium
Subset of	Nash equilibrium
Intersects with	Evolutionarily stable strategy
Proposed by	Reinhard Selten
Used for	Extensive form games
Example	Ultimatum game

With reference to the table, assess whether the statement is entailed, neutral, or refuted. Output only the JSON object {"answer": "YOUR ANSWER"}.

Hypothesis: Subgame Perfect Equilibrium was created by a Harvard economist.

answer: neutral