Title: Steven Spielberg.
Question: Who narrated a short Spielberg bio at the Kennedy Center?

Title: Light-emitting diode.
Question: What colors are used to form white light?

Title: Daylight saving time.
Question: When the UK changes their clocks forward in the spring, what do they call the time they're then observing?

Title: Multiracial American.
Question:
What censuses did he study?