Input: concept: Nicholas Sparks  answers:  ['Das Lächeln der Sterne.', 'Weg Der Traume', 'Three weeks with my brother', 'Dear John', 'A bend in the road', 'Weg der Träume.', 'Une bouteille à la mer', 'A Tout Jamais', 'At first sight', 'The Choice']
Output: 

 what kind of books does nicholas sparks wrote?