Answer:
... John and Mary are equal.
Explanation:
We can use basic logic reasoning to complete this sentence. We have two premises that, being true, lead to a conclusion.
Premise 1: All citizens are equal.
Premise 2: John and Mary are citizens.
In that case, John and Mary are equal. They are citizens, and all citizens are equal. At no point, we are told John and Mary are an exception to this fact. So, John and Mary's being equal is the only logical conclusion from the two premises we have.
If I had time, I would go shopping with you.
The clause <em>who bought the coat </em>is used as an adjective subordinate clause because it modifies the noun <em>the man.
</em>What man forgot his umbrella? (The one) who bought the coat.<em>
</em>