Yes, Guinea is further west than the prime meridian (zero degrees latitude). The midpoint of Guinea is further west by approximately 648 miles (1,043km).
No, Guinea is not further east than the prime meridian (zero degrees latitude).
Yes, Guinea is further north than the equator. The midpoint of Guinea is further north by approximately 687 miles (1,106km).
No, Guinea is not further south than the equator.