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|context> => |context: sw console>

supported-ops |_list> => |op: >
 |_list> => |red> + |green> + |orange>

supported-ops |red> => |op: fruit> + |op: object> + |op: is-primary-colour>
fruit |red> => |apple> + |tamato> + |strawberries>
object |red> => |red ball> + |sticker>
is-primary-colour |red> => |red>

supported-ops |green> => |op: fruit> + |op: object> + |op: is-primary-colour>
fruit |green> => 0.2|apple> + 0.3|banana>
object |green> => |lawn> + |plants> + |trees> + |forest>
is-primary-colour |green> => |green>

supported-ops |orange> => |op: fruit>
fruit |orange> => |fruit: orange> + |fruit: mandarin>
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