AK gets raised on the turn

[jjacky]

semi tough table, more on the tight side. no further reads.

unfortunately i can't use a converter. here is the action:

an early limper calls, hero raises with A [img]/images/graemlins/heart.gif[/img]K [img]/images/graemlins/club.gif[/img], two middle player and the limper call.

9.5 sb, 4 players. flop is 9 [img]/images/graemlins/club.gif[/img] - 7 [img]/images/graemlins/diamond.gif[/img] - 3 [img]/images/graemlins/spade.gif[/img]
the limper checks, hero bets, first middle position player calls, everyone else folds.

pot is 5.75 BB, 2 players. turn is A [img]/images/graemlins/spade.gif[/img]
hero bets and gets raised.

what's your line for the rest of the hand? elaborate.