What is a song recorded by Barbadian singer Rihanna, American musician Kanye West and English musician/former Beatles member Paul McCartney, that was followed by a trap song and represents a notable musical departure from the previous single?
----
Answer: FourFiveSeconds

In which year did the French economist, socialist, theoretician and politician, who was a great influence on the German philosopher, economist and revolutionary socialist Karl Marx, participate in the Revolution?
----
Answer: 1848

Albert Costa and Marc Rosset were professional players in which sport?
----
Answer:
tennis