question: What are gravitational waves ?
answer: phenonena observed locally that largely violate the kind of local flatness of space that Whitehead assumes
turker_answer: Gravitational waves are phenonena observed locally that largely violate the kind of local flatness of space that Whitehead assumes .
rule-based: Gravitational waves are phenonena observed locally that largely violate the kind of local flatness of space that Whitehead assumes .