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": ""}
 n POLYGONACEAE    OTTER LAK3. p971  1950-07-25 !@   DYR Moist roadside.    d7^Z -88.573772 l. a^Yp  1463093 -l~G1        aviculare   46.912604 p    bolygonum aviculare m+   Houghton  tg z   54w  charles d. richards    I> Polygonum 
{"catalogNumber": "1463093", "order": "", "family": "Polygonaceae", "scientificName": "Polygonum aviculare", "scientificNameAuthorship": "L.", "genus": "Polygonum", "subgenus": "", "specificEpithet": "aviculare", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "", "verbatimEventDate": "1950-07-25", "habitat": "Moist roadside.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Houghton", "municipality": "", "locality": "Otter Lake.", "decimalLatitude": "46.912604", "decimalLongitude": "-88.573772", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}