Title: Bird.
Question: What is the fan shaped blood supply system in a bird's retina?

Title: Kanye West.
Question: What was the name of the nickname Kanye West took on in his video "Touch the Sky"?

Title: Korean War.
Question: Fearing the provocation of Communist China, what country's request for combat troops did the US deny?

Title: San Diego.
Question:
What is San Diego's largest software company?