question: The radical transformation of what aspect of the obligations between the parties is a necessary condition for a claim of a fundamental change in circumstances to terminate a treaty ?
answer: the extent of obligations
turker_answer: The radical transformation of the extent of obligations between the parties is a necessary condition for a claim of a fundamental change in circumstances to terminate a treaty .
rule-based: The radical transformation a necessary condition for a claim of a fundamental change in circumstances to terminate a treaty is of the extent of obligations .