### CONTEXT (Previous Events):
<system_output timestamp="40666.414282">e</system_output>
<user_input timestamp="40666.547786"> </user_input>
<system_output timestamp="40666.554124"> </system_output>
<user_input timestamp="40666.741262">i</user_input>
<system_output timestamp="40666.758444">i</system_output>
<user_input timestamp="40666.995896">t</user_input>
<system_output timestamp="40667.005485">t</system_output>
<user_input timestamp="40667.072983"> </user_input>
<system_output timestamp="40667.086459"> </system_output>
<user_input timestamp="40667.286293">i</user_input>
<system_output timestamp="40667.289087">i</system_output>
<user_input timestamp="40667.482231">s</user_input>
<system_output timestamp="40667.490923">s</system_output>
<user_input timestamp="40667.618928"> </user_input>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="40667.631294"> </system_output>

Answer: 40667.631294, old event