Question: The 1997–98 FC Barcelona season began with the addition of the striker who was of what nationality?
Related documents: [0]  [DOC] Anderson da Silva (born 19 September 1970), known as Sonny Anderson, is a Brazilian retired footballer who played as a striker. [END] 
[1]  [DOC] FC Barcelona returned to its previous glorious league ways under the guidance of new coach Louis van Gaal. The highly rated coach, hired from Ajax Amsterdam, brought lethal striker Sonny Anderson and the attacking midfielder Rivaldo with him. But surprisedly Barcelona sold Ronaldo to Inter Milan just before season begin and thus handed Sonny Anderson as main striker. He introduced Barcelona to his marvelous 4-3-3 formation, in which Rivaldo was a perfect centre forward, scoring 20 goals in the league. Under van Gaal at helm on his first season, Barcelona won their 15th La Liga title, 2nd European Super Cup title as well as 24th Copa del Rey title (thus winning their domestic double) but Barcelona crashed out of the UEFA Champions League, following a lackluster performance in the First Group Phase. In fact, Barcelona ended up last in the group, and was not even qualifying for the remainder of the UEFA Cup, contributing only single victory, two draws and three defeats and thus preventing Barcelona's first treble glory. [END] 
Answer: 
Brazilian
Brazilian