premise: Four married couples—Francisco and Gabrielle, Kyoko and Lee, Olivia and Peter, Raymond and Simone—will dine together at the same circular table. Each person will sit in a different one of the eight chairs evenly spaced around the table. The chairs are numbered from 1 through 8 with successively numbered chairs next to each other and chair 1 next to chair 8. Seating arrangements must meet the following conditions: No person sits next to her or his spouse. Simone sits in chair 1 and Raymond sits in chair 4. Neither Peter nor Olivia sits next to Raymond. Neither Kyoko nor Lee sits next to Gabrielle. If neither Gabrielle nor Lee sits next to Raymond, which one of the following must be true?
hypothesis: Francisco sits in chair 3.