Assertion: google wave | /r/HasProperty | stored on central server
Facets:
value: perpetually
type: MANNER
Source sentences:
text: Google Wave worked like previous messaging systems such as email and Usenet, but instead of sending a message along with its entire thread of previous messages, or requiring all responses to be stored in each user's inbox for context, message documents (referred to as waves) that contain complete threads of multimedia messages (blips) were perpetually stored on a central server.