Assertion: aqueduct | /r/AtLocation | existence
Facets:
value: so clearly
type: MANNER
value: at that time
type: TEMPORAL
Source sentences:
text: Now the letter was written in 150 AD, so clearly the aqueduct was in existence at that time, but since he was writing as if it was 285 BC, it means that the aqueduct was also surely in full operation then too.