question: we walk back to the road, and a little blue passes.
Capitalize this past sentence correctly.
A: We walk back to the road, and a little blue passes.

question: the queen by vincenzo valgrisi. there's a larger version here: queen.
Capitalize this past sentence correctly.
A: The queen by Vincenzo Valgrisi. There's a larger version here: Queen.

question: de-cix expands to interxion dusseldorf
Capitalize this past sentence correctly.
A: DE-CIX expands to Interxion Dusseldorf