Other subjects in dontopedia point AT this entity as a value. These are inverse relationships — e.g. “X motherOf this subject” — and answer questions the forward facts can't. Grouped by predicate.
Timeline axis is valid_time — when each source says the fact was true in the world, not when Dontopedia learned about it. Retracted rows are kept for provenance; coloured stripes indicate the context kind.
```python
def save_model(version, data):
try:
# Save model to database
db.save(version, data)
except VersionConflictError as e:
# Log error and retry save
logging.error(f"Version conflict error: {e}")…
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Existing claims and sources remain available while the prepaid research lane recharges.