question: an electronic key reader is also integrated as a no-contact access control system with function led.
Capitalize this past sentence correctly.
A: An electronic key reader is also integrated as a no-contact access control system with function LED.

question: it's the most impressive product that's demoed at devcon. mist is a next generation web browser that runs on top of the open source chromium engine powering google chrome.
Capitalize this past sentence correctly.
A: It's the most impressive product that's demoed at DevCon. Mist is a next generation web browser that runs on top of the open source Chromium engine powering Google Chrome.

question: 28 but *he* said, yea rather, blessed are they who hear the word of god and keep [it].
Capitalize this past sentence correctly.
A: 28 But *he* said, Yea rather, blessed are they who hear the word of God and keep [it].