[Azhrarn]

I like the calling on the turn, although I wouldn't call it obvious. I like it for a few reasons though.

First, the hero has two queens, so I'm less willing to give an opponent credit for a queen straight. There are three straights possible on the turn (97, Q9, AQ), and AQ is somewhat less likely because of the preflop action. But our hero can tie or beat any of the straights with a river ace, and can tie one, beat one, and lose to one with a river nine.

The flush draw complicates things further, but in general I like the call. There's a decent chance the hero's up against two pairs or sets.