Where Sicilians are provided with one motive

• Like some birthday parties
• Focused on a subject, as a crossword
• Sea with a unifying idea
• Like most crossword puzzles
• Like many a crossword
• Like some amusement parks
• With a topic
• Having a topic
• Like many amusement parks

Wiktionary Word definitions in Wiktionary
a. (context often in combination English) Having a particular theme or topic