'Problem structure.'

def get_problem(self):

    xml = dedent('\n                                <problem>\n                                                <choiceresponse>\n                                                                <label>question    1    text    here</label>\n                                                                <description>description    2    text    1</description>\n                                                                <description>description    2    text    2</description>\n                                                                <checkboxgroup>\n                                                                                <choice    correct="true">True</choice>\n                                                                                <choice    correct="false">False</choice>\n                                                                </checkboxgroup>\n                                                </choiceresponse>\n                                                <multiplechoiceresponse>\n                                                                <label>question    2    text    here</label>\n                                                                <description>description    2    text    1</description>\n                                                                <description>description    2    text    2</description>\n                                                                <choicegroup    type="MultipleChoice">\n                                                                                <choice    correct="false">Alpha    <choicehint>A    hint</choicehint></choice>\n                                                                                <choice    correct="true">Beta</choice>\n                                                                </choicegroup>\n                                                </multiplechoiceresponse>\n                                    </problem>\n                                ')
    return XBlockFixtureDesc('problem', 'Problem    A11Y    TEST', data=xml)
