| P1889 | different from | ... | Q862562 (railway signal) | railway signal |
| P1269 | facet of | ... | Q862562 (railway signal) | railway signal |
| P279 | subclass of | ... | Q151885 (concept) | concept |
| P279 | subclass of | ... | Q174984 (signal) | signal |
| P2671 | Google Knowledge Graph ID | /g/121bk9t1 |
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