  This paper proposes a programmable relation extraction method for the English
language by parsing texts into semantic graphs. A person can define rules in
plain English that act as matching patterns onto the graph representation.
These rules are designed to capture the semantic content of the documents,
allowing for flexibility and ad-hoc entities. Relation extraction is a complex
task that typically requires sizable training corpora. The method proposed here
is ideal for extracting specialized ontologies in a limited collection of
documents.
