[Closed] NL5 Rush AQ F:A78s contibet raised

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.02/$0.05 No-Limit Hold'em (9 handed)

Known players:
[tg]MP1$5.00:///////;MP2$8.89:///////;MP3$5.02:///////;CO (Hero)$5.07:///////;BU$2.08:///////;SB$2.70:///////;BB$6.61:///////;UTG1$5.02:///////;UTG2$4.16:///////;[/tg]

Preflop: Hero is CO with A:s, Q:c.
5 folds, Hero raises to $0.20, BU folds, SB calls $0.18, BB folds.

Flop: ($0.45) 7:s, A:h, 8:h (2 players)
SB checks, Hero bets $0.28, SB raises to $0.80, Hero calls $0.52.

Turn: ($2.05) 3:c (2 players)
SB bets $0.70, Hero calls $0.70.

River: ($3.45) A:c (2 players)
SB bets $1.00(All-In), Hero calls $1.00.

Final Pot: $5.45.
Results follow:

Hero shows three of a kind, aces(A:s Q:c).
SB shows a full-house, eights full of aces(8:c 8:d).

SB wins with a full-house, eights full of aces(8:c 8:d).

At what point is this a fold?