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

Consulting the table, determine whether the statement is entailed, neutral, or refuted. Provide the verdict inside {"answer": "YOUR ANSWER"} as JSON.

Hypothesis: Subgame Perfect Equilibrium is used for games.

answer: entailed