Assertion: railroad's train | /r/AtLocation | the block
Facets:
value: at any time
type: TEMPORAL
Source sentences:
text: For example, a broken wire in the track circuit would falsely indicate that no train was in the block, even if one was.
text: The common method of block signalling divides the track into zones guarded by combinations of block signals, operating rules, and automatic-control devices so that only one train may be in a block at any time.
text: If, however, a train is in the block, the transmitter/receiver circuit is broken, stopping subsequent trains from entering the block.
text: If, however, a train is in the block, the transmitter/receiver circuit is broken, stopping subsequent trains from entering the block.