が置いてあります

is placed

→ が
phrase Rare #22,153
is placed Describes something that has been put somewhere and remains there. 置いてあります is polite; the casual form is 置いてある.
JA: 玄関に傘が置いてあります。
EN: An umbrella has been left by the entrance.

部屋にピアノが置いてあります

There is a piano in the room.

食卓に蜂蜜が置いてあります

There is honey on the dining table.

外にはが置いてあります

There is a car parked outside.

机の上にカレンダーが置いてあります

There is a calendar on the desk.

あの店には織物が置いてあります

Does that store carry textiles?