text: COCO_train2014_000000549478.jpg ### The clock tower is a large, green clock tower in the center of London. It is a popular tourist attraction and is known for its large clock face and the bells that chime every hour. The clock tower is a symbol of London and is a popular spot for tourists to take pictures.  The clock tower is a large, green clock tower in the center of London. It is a popular tourist attraction and is known for its large clock face and the bells that chime every hour. The clock tower is a symbol of London and is a popular spot for tourists to take pictures.  The clock tower is a large, green clock tower in the center of London. It is a popular tourist attraction and is known for its large clock face and the bells that chime every hour. The clock tower is a symbol of London and is a popular spot for tourists to take pictures.  The clock tower is a large