Statistics for Japanese Inventions

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Clue	Year	Answer	% Correct
This thing	1994	QR code	88%
These things	1997	Emoji	85%
Machine that helps people sing along to a music video	1981	Karaoke	83%
Circular media for storing up to 74 minute of music	1982	Compact disc	81%
Martial arts style that originated in Okinawa	?	Karate	81%
Type of train	1964	Bullet train	76%
Martial arts style in the Olympic games	1882	Judo	68%
Small dessert item which can predict the future	≈ 1900	Fortune cookie	67%
Type of battery that powers phones, laptops, and electric vehicles	1985	{Lithium}-ion	66%
Just add boiling water to get a tasty meal	1958	{Instant} noodles	59%
Wristwatches that use this type of crystal	1967	Quartz	50%
Hotel with very tiny rooms, sometimes stacked on top of one another	1979	{Capsule} hotel	45%
Type of ship, later employed at the Battle of Midway	1922	Aircraft carrier	36%
Type of salt which gives food an "umami" flavor	1908	Monosodium glutamate	34%
The 113th element of the Periodic Table, named for the country of Japan	2004	{Nihon}ium	34%
Addictive drug which gives people manic energy	1893	Methamphetamine	31%
Strand of repeated DNA which can be used for gene editing (hint: acronym)	1987	CRISPR	26%
The Fujita scale, used to measure the strength of ...	1971	Tornadoes	23%