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|context> => |context: learning about Mary>

supported-ops |context: learning about Mary> => |op: url>
url |context: learning about Mary> => |url: http://blog.ayoungprogrammer.com/2015/09/a-simple-artificial-intelligence.html>

supported-ops |Mary> => |op: went> + |op: went-sledding-with> + |op: won> + |op: won-a-race-against> + |op: won-a-race-to-the> + |op: won-a> + |op: cheered> + |op: cheered-because> + |op: cheered-because-it-was> + |op: her-brother>
went |Mary> => |sledding>
went-sledding-with |Mary> => |her family>
won |Mary> => |a race>
won-a-race-against |Mary> => |her brother>
won-a-race-to-the |Mary> => |bottom of the hill>
won-a |Mary> => |race>
cheered |Mary> => |yes>
cheered-because |Mary> => |it was her first time winning>
cheered-because-it-was |Mary> => |her first time winning>
her-brother |Mary> => |Jack>

supported-ops |*> => |op: everything> + |op: list-of-operators>
everything |*> #=> apply(supported-ops|_self>,|_self>)
list-of-operators |*> #=> remove-leading-category supported-ops |_self>
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