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": ""}
 d-v 6 United States CONVOLVULUS Na^[    &1nt arvensis  CEl+ charles d. rchards   l.     v2 Houghton  z[+Z sterile ground along r. r. tracks at dollar bay.   P_|d convolvulus arvensis     Kc 3873 "Prostrate plant." p    `_ solanales   k Convolvulaceae 1222578 / Aq   M65 1950-07-30    ALONG R. R. TRACKS AT DOLLAR BAY b^  
{"catalogNumber": "1222578", "order": "Solanales", "family": "Convolvulaceae", "scientificName": "Convolvulus arvensis", "scientificNameAuthorship": "L.", "genus": "Convolvulus", "subgenus": "", "specificEpithet": "arvensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "3873", "verbatimEventDate": "1950-07-30", "habitat": "Sterile ground along R. R. tracks at Dollar Bay.", "occurrenceRemarks": "\"Prostrate plant.\"", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Houghton", "municipality": "", "locality": "along R. R. tracks at Dollar Bay", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}