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<?xml version="1.0"?>
<!--
The structure of the tree is not ordered top to down.
-->
<opsa-mef>
<define-fault-tree name="TwoTrains">
<define-gate name="TopEvent">
<and>
<gate name="TrainOne"/>
<event name="TrainTwo"/>
</and>
</define-gate>
<define-gate name="TrainThree"> <!-- This gate is defined before use -->
<or>
<basic-event name="ValveOne"/>
<event name="PumpTwo"/>
</or>
</define-gate>
<define-gate name="TrainOne">
<or>
<event name="TrainThree"/>
<basic-event name="ValveOne"/>
<house-event name="PumpOne"/>
</or>
</define-gate>
<define-gate name="TrainTwo">
<or>
<basic-event name="ValveTwo"/>
<event name="PumpTwo"/>
</or>
</define-gate>
<define-basic-event name="ValveOne"/>
<define-basic-event name="ValveTwo"/>
<define-house-event name="PumpOne"/>
<define-basic-event name="PumpTwo"/>
</define-fault-tree>
</opsa-mef>
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