Complex sentence: In Resembool, Ed and Al meet an enigmatic alchemist named Jack Crowley and the Phantom; seems they've some connection with both the disappearances and the strange creatures (known as Golems) appearing around the countryside.
Split into simpler sentences: In Resembool, Edward and Alphonse meet an enigmatic alchemist named Jack Crowley and an entity called the Phantom. It seems that they have some connection with both the disappearances and the strange creatures (known as Golems) appearing around the countryside.