| http://www.w3.org/ns/prov#value | - tions. - Types of identifiers must be matched. - Blanks, tabs, and ends of line serve as token separators. (They may not appear within tokens). - Identifiers are strings of letters, digits, $, #, and underscores starting with a letter. - Maximum size of an identifier is 30 characters. - Data types are: BOOLEAN, NUMBER, SMALLINT, POSITIVE, CHAR, VARCHAR2. - Data casting is permitted. - String, 'VAR
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