Question: Martin Franklin Conway was a U.S. congressman, consul to France, abolitionist, and advocate of which movement in Kansas, the movement was by those settlers in Kansas Territory during the Bleeding Kansas era in the 1850s who opposed the extension of slavery to Kansas?
{'answer': 'Free-Staters', 'supporting_facts': [['Martin F. Conway', 0], ['Free-Stater (Kansas)', 0]]}