question:
On 13 December 1904, Hungarian Sandor Just and Croatian Franjo Hanaman were granted a Hungarian patent (No. 34541) for a tungsten filament lamp that lasted longer and gave brighter light than the carbon filament.
Which inventors patented the tungsten filament lamp?

answer: yes

question:
Season eight premiered on January 13, 2009.
What month did American Idol begin airing its eighth season?

answer: yes

question:
The DVB develops and agrees upon specifications which are formally standardised by ETSI.
Who standardizes HDTV specifications?

answer: yes

question:
In addition, not all Native Americans have been tested, so scientists do not know for sure that Native Americans have only the genetic markers they have identified.
Who says genetic tests can't tell the difference between different Native American nations?

answer:
no