Assertion: abacus's bead | /r/CapableOf | slide in slot
Facets:
Source sentences:
text: The Romans also made a mechanical version, with beads sliding in slots, called an abacus.
text: The Romans also made a mechanical version, with beads sliding in slots, called an abacus.
text: The Romans also made a mechanical version, with beads sliding in slots, called an abacus.