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": ""}
 1981 $^V   1971-06-07 @K2&   YUCCA SCHOTTII Lc   MEXICO Vmm   kw2 30.1249  QW &. schottii  p) mR -108.@236     mesa de la avena; 16 mi sw of col. juã¡rez ]M0  Yucca q^7UJ  chihuahua G 1]          
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Yucca schottii", "scientificNameAuthorship": "", "genus": "Yucca", "subgenus": "", "specificEpithet": "schottii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1971-06-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Chihuahua", "county": "", "municipality": "", "locality": "Mesa de la Avena; 16 mi SW of Col. Ju\u00c3\u00a1rez", "decimalLatitude": "30.1249", "decimalLongitude": "-108.236", "verbatimCoordinates": "", "minimumElevationInMeters": "1981", "maximumElevationInMeters": ""}