question: In order to be considered a fundamental change , a change in circumstances must have been what at the time of the adoption of the treaty ?
answer: unforeseen
turker_answer: A change in circumstances must have been unforeseen at the time of the adoption of the treatyi n order to be considered a fundamental change .
rule-based: In order to be considered a fundamental change , a change in circumstances must have been unforeseen at the time of the adoption of the treaty .