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Nicolas invented which food preserving method in 1811?
Henry Fox Talbot invented which technique in the 19th century?
Sergey Brin and Larry Page invented which internet site in 1998?
Thomas Edison filed patents for over how many products?
What wireless technology did Ericsson launch in 1994?
What was the surname of the brothers who made the first powered flight?
Who invented the ballpoint pen?
Which country installed the first lighthouse around 600 BC?
What measuring device was invented by Evangelista Torricelli?
Which scientist drew the first helicopter prototype?
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Everybody likes music, but how much do you know about it?
Who sang these famous pop songs?
Do you remember these old cities?