 class="lineno">   17</span>&#160;        PHYSICAL_ENTITY,</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;        PHYSICAL_PROCESS,</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;        energy_diff,</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;        SINGULAR,</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        UNKNOWN</div>
<div class="line"><a name="l00