In this task, you're given a context passage. Your job is to generate relevant questions that can be answered by directly referring to the passage.

Q: Few of the puffs still resided on Popstar but many left to who knows where . " Those poor lost souls ... " The knight thought to himself . He remembered falling ... falling from the sky .... The sky was so deep and dark blue ... the stars were falling . The other puff creatures were'born'this way , too . Metaknight remembered how they fell like stars .

A: What may have caused the puffs to leave Popstar ?
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Q: Last weekend , I took the train into the city with my younger brother to attend a concert . We drove to the train station to catch the 4 PM train . It took a while to find parking . Once we boarded the train , we took a seat . The train conductor came by and we purchased 2 round trip tickets with cash . The ride to the city took about an hour . Many people got on and off at every stop . I enjoyed the people watching . There were many different types of people , the business types , students , families , and coeds . There were a couple loud babies and annoying blondes as well . It was very loud . After about an hour , we were almost to our stop . Once we arrived , the train pulled into the system and the conductor announced that it was the last stop and that everything had to depart . We walked onto the platform and into the train station , then were on our way .

A: Did they need reservations?
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Q: Also during june , metal gear solid and guitar hero on tour topped the game sales charts as nintendo wii and nintendo ds topped the console sales charts . W i i - here is the first sales report of nintendo wii in japan , between december - nintendo shipped , units of wii in japan and sold through , units in the . The latest console - sales figures to be released from npd group reveal that the wii has overtaken the xbox in being the most purchased console in the us . With the newest sales results , the wii is now officially the top selling console in the united states for this generation hardware nintendo ds - , 000 ; nintendo wii - , .

A:
Why did the wii overtake the xbox in being the most purchased console in the us ?
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