Complex sentence: The latter implies the annual organization of a conference at the French Parliament, in 2013 on the challenges around gaz fields in the Eastern Mediterranean Sea, in 2014 on maritime safety in the Gulf of Guinea.
Split into simpler sentences: The latter implies the annual organization of a conference at the French Parliament. In 2013 this conference addressed challenges associated with the gas fields in the Eastern Mediterranean Sea; in 2014 it addressed maritime safety in the Gulf of Guinea.