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": ""}
   15    Digitaria e 4^  POACEAE  F8T  (schult.) pilg. i   3<| 4865  SAN FERNANDO NC     ` EL CHAPOTE; 24 kMI N OF SAN hFERNANDO ON THE MATAMOROS HWY, EL CANELO RANCH    1120408 kBqy     25.1947 !v%*,   QTk Mexico   -98.1654 dG)   N*fc+ 1959-12-07 Digitaria cognata S   Dy  M. JOHNSTON 
{"catalogNumber": "1120408", "order": "", "family": "Poaceae", "scientificName": "Digitaria cognata", "scientificNameAuthorship": "(Schult.) Pilg.", "genus": "Digitaria", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "M. Johnston", "recordNumber": "4865", "verbatimEventDate": "1959-12-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "San Fernando", "municipality": "", "locality": "El Chapote; 24 mi N of San Fernando on the Matamoros hwy, El Canelo Ranch", "decimalLatitude": "25.1947", "decimalLongitude": "-98.1654", "verbatimCoordinates": "", "minimumElevationInMeters": "15", "maximumElevationInMeters": ""}