[Galadriel55]

Living thing - not really
Object - no
Sentient - in a way/you could say so
Undead - no
Silent Watchers - no
Natural - as in, not crafted? As much as I'm tempted to confuse you all, I won't. "It" is natural.
Connected to Elves - yes, very!!
Present during the first age - yes
Present in more than one age - yes

Straight Road - no, it's much more "alive"


The example that I gave before - a forest - is probably too much of a clue to give at the very beginning, but I couldn't think of a better one. So yes, this is another clue. Think of how a forest works, why it could be considered alive, etc...