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This file is part of Logtalk <https://logtalk.org/>  

SPDX-FileCopyrightText: 2018-2019 Paulo Moura  
SPDX-FileCopyrightText: 2016 Metagol authors  
SPDX-License-Identifier: BSD-3-Clause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

* Neither the name of the copyright holder nor the names of its
  contributors may be used to endorse or promote products derived from
  this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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To load this port and for sample queries, please see the `SCRIPT.txt`
file in the main directory.

This folder contains ports of the examples in the original `metagol`
distribution. All examples provide a public `learn/0` predicate (or
`learn1/0`, `learn2/0`, ... predicates) to run them. There's also a
`learn/1` predicate (or `learn1/1`, `learn2/1`, ... predicates) that
is mainly used in the unit tests.
