Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
  542 Bv     POLYGONACEAE t     Anton A. Reznicek !V y  ontario    POLYGONUM 0  SIMCOE o2f^h      5cl contact um herbarium  hydropiper y   # 1305391  canada 6?   ~ 1970-09-03  eb Caryphyllales l. jM   w polygonum hydropiper
{"catalogNumber": "1305391", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Polygonum hydropiper", "scientificNameAuthorship": "L.", "genus": "Polygonum", "subgenus": "", "specificEpithet": "hydropiper", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Anton A. Reznicek", "recordNumber": "542", "verbatimEventDate": "1970-09-03", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Simcoe", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}