Problem: The thirteenth season premiered on January 15, 2014, with Ryan Seacrest returning as host. Randy Jackson and Keith Urban returned, though Jackson moved from the judging panel to the role of in-mentor. Mariah Carey and Nicki Minaj left the panel after one season. Former judge Jennifer Lopez and former mentor Harry Connick, Jr. joined Urban on the panel. Also, Nigel Lythgoe and Ken Warwick were replaced as executive producers by Per Blankens, Jesse Ignjatovic and Evan Pragger. Bill DeRonde replaced Warwick as a director of the audition episodes, while Louis J. Horvitz replaced Gregg Gelfand as a director of the show.
Per Blankens, Jesse Ignjatovic, and Evan Pragger replaced which two executives?
---
Answer: Nigel Lythgoe and Ken Warwick


Problem: Warfare in Normandy at the time was shaped by the defensive potential of castles and the increasing costs of conducting campaigns. The Norman frontiers had limited natural defences but were heavily reinforced with castles, such as Château Gaillard, at strategic points, built and maintained at considerable expense. It was difficult for a commander to advance far into fresh territory without having secured his lines of communication by capturing these fortifications, which slowed the progress of any attack. Armies of the period could be formed from either feudal or mercenary forces. Feudal levies could only be raised for a fixed length of time before they returned home, forcing an end to a campaign; mercenary forces, often called Brabançons after the Duchy of Brabant but actually recruited from across northern Europe, could operate all year long and provide a commander with more strategic options to pursue a campaign, but cost much more than equivalent feudal forces. As a result, commanders of the period were increasingly drawing on larger numbers of mercenaries.
What castle was built at a strategic point?
---
Answer: Château Gaillard


Problem: A major feature is the calypso competition. Calypso music, originating in Trinidad, uses syncopated rhythm and topical lyrics. It offers a medium in which to satirise local politics, amidst the general bacchanal. Calypso tents, also originating in Trinidad, feature cadres of musicians who perform biting social commentaries, political exposés or rousing exhortations to "wuk dah waistline" and "roll dat bumper". The groups compete for the Calypso Monarch Award, while the air is redolent with the smells of Bajan cooking during the Bridgetown Market Street Fair. The Cohobblopot Festival blends dance, drama and music with the crowning of the King and Queen of costume bands. Every evening the "Pic-o-de-Crop" Show is performed after the King of Calypso is finally crowned. The climax of the festival is Kadooment Day celebrated with a national holiday when costume bands fill the streets with pulsating Barbadian rhythms and fireworks.
Who perform biting social commentaries?
---
Answer:
musicians