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": ""}
 1939-07-21 %    Los Osos; 35 km W of Cuatro CiÃ©negas ?u    -102.414 B  1122350 `9    $81 750   8xg~l heteropogon (L.) BEAUV. EX ROEMER & J.A. SCHULTES G0`      8ZS Heteropogbon contortus  Coahuila W3        L8 contortus    n MEXICO
{"catalogNumber": "1122350", "order": "", "family": "", "scientificName": "Heteropogon contortus", "scientificNameAuthorship": "(L.) Beauv. ex Roemer & J.A. Schultes", "genus": "Heteropogon", "subgenus": "", "specificEpithet": "contortus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "750", "verbatimEventDate": "1939-07-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Coahuila", "county": "", "municipality": "", "locality": "Los Osos; 35 km W of Cuatro Ci\u00c3\u00a9negas", "decimalLatitude": "", "decimalLongitude": "-102.414", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}