First implementation (#1)

Reviewed-on: #1

fixtures/records/submissions/check-overlap.json

@@ -0,0 +1 @@
+{"answers":{"anchors":[{"doc":"hale2026harmonic-damb","format":"scienting-anchor/1","kind":"sentence","node":"kea5026","node_hash":"b836d5872ca37471fa996be04c538254a8b1e37ca12e8f1b4a40837b503afa33","own_hash":"d673d236c03d9583ecf6e01fa819765ec324dc684bd9bbc6967fa50f216e34d2","quote":{"exact":"most common description of covalent","prefix":"Harmonic bond terms remain the ","suffix":" stretching in classical force f"},"rev":12,"span":[31,66],"store":"smithlab"}],"verdict":"supports"},"doc":"smithlab/hale2026harmonic-damb","exercise":"tag:scient.ing,2026:annotation:smithlab/y7bd3he0jwjbx","format":"scienting-submission/1","id":"n7me2fmcw8ree","rev":12,"student":"s-7k2m","submitted_at":"2026-10-20T10:05:00Z"}