English definite article the indicates some specified individual of a given concept. An individual of a given concept is specified by mentioning it earlier in the sentence. Variables appear in semantic rules. When a variable occurs for the first time it is preceeded by a/an and later by the.
Different use cases of variables in semantic rules are summed up in the table below.
THE-" " is used to define an instance with a custom identifier, other that combination of words starting with capital letter and numbers separated by dashes.
|Variable pattern||Use case|
|a/the class-name||denotes variables assigned to a class/concept|
|a/the thing||represents an instance of the top concept "owl:Thing" and thus any variable in the SR-CE sentence.|
|a/the class-name(n)/thing(n)||different number in parenthesis marks more variables of the same type.|
This example shows how to use definite article the while introducing variables into semantic rules.