Assertion: bbs | /r/CapableOf | allow only one user
Facets:
value: at a time
type: TEMPORAL
Source sentences:
text: BBSs range from single computers with only one telephone line into the computer (allowing only one user at a time), to single computers with many telephone lines into the computer (allowing multiple simultaneous users), to multiple linked computers each servicing multiple dial-in telephone lines (allowing multiple simultaneous users).