Thread:Support/About MediaWiki:Smw-pa-property-predefined sil container/en and MediaWiki:Smw-pa-property-predefined sbl parentpage/en

These messages have so many in common that it deems useful to extract part of them into an extra common message. Even more so, since there are and/or will be likely more messages like these ones... Suggestion:
 * ''"$1" is a predefined property (also known as special property) which is provided by the [$2 $3] extension.

This message can be used to precede or follow the message giving the semantics of the property in detail.