Which languages should be added beside the photos?

The language in which people ask for the photo to be explained is added, complete, with the same price. A language is not added to decorate the gallery if nobody maintains the text. Note for one week which language is asked for when people see the image. In Madrid French is published because the neighbour has it and the captions stay empty. The language that was asked for has text on every published photo, and the others do not appear.