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": ""}
1646 Dh  la media luna; galeana .8a;    50E  1939-07-28  Zd>Z^ 7631 24.80 FV     )j k Virginius H. Chase   ~ saccharoides 1117951 Y   MEXICO a4]    BOTHRIOCHLOA b     /d mesa,  FRANK W. GOULD I    q POALES nuevo leon rk   RYDB. $|     
{"catalogNumber": "1117951", "order": "Poales", "family": "", "scientificName": "", "scientificNameAuthorship": "Rydb.", "genus": "Bothriochloa", "subgenus": "", "specificEpithet": "saccharoides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Frank W. Gould", "recordedBy": "Virginius H. Chase", "recordNumber": "7631", "verbatimEventDate": "1939-07-28", "habitat": "Mesa,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Nuevo Leon", "county": "", "municipality": "", "locality": "La Media Luna; Galeana", "decimalLatitude": "24.809", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "1646", "maximumElevationInMeters": ""}