Question:
Some citizens of the kingdom were put in chains by the royal guard since they have been accused of breaking the law.

they
Answer:
Some citizens of the kingdom
Question:
Gold is more popular than black because it does not sparkle.

it
Answer:
black
Question:
God created Adam for good but he could not control his creation.

he
Answer:
God
Question:
Ken has Adam's bike, because he took it from him.

he
Answer:
Ken