Q: Does "People also donated blood, resulting in according to Xinhua long line-ups in most major Chinese cities." provide a valid answer to "What caused long lines in most major cities?"?
A: yes

Q: Does "The term heartwood derives solely from its position and not from any vital importance to the tree." provide a valid answer to "What property of heartwood that has nothing to do with how important it is to trees got it its name?"?
A: yes

Q: Does "Used even by Apple for A/UX and MkLinux, this technique is no longer necessary since the introduction of Open Firmware-based PCI Macs, though it was formerly used for convenience on many Old World ROM systems due to bugs in the firmware implementation.[citation needed]" provide a valid answer to "What was introduced that made using Mac OS alternative operating systems easier?"?
A: yes

Q: Does "USB mice and keyboards can usually be used with older computers that have PS/2 connectors with the aid of a small USB-to-PS/2 adapter." provide a valid answer to "USB keyboards and mice may communicate using what?"?
A:
no