### CONTEXT (Previous Events):
<system_output timestamp="8631.821598">
[2@demo@faiserver:/home/fai$ sudo cp
[1;196r[196;1H
[?2004l</system_output>
<system_output timestamp="8631.828119">sudo: unable to resolve host faiserver: Name or service not known
</system_output>
<system_output timestamp="8631.830584">[sudo] password for demo: </system_output>
<user_input timestamp="8633.829893"/>
<user_input timestamp="8635.702782"/>
<user_input timestamp="8636.517202">
</user_input>
<system_output timestamp="8636.522728">
</system_output>
<system_output timestamp="8638.718377">Sorry, try again.
</system_output>
<system_output timestamp="8638.718616">[sudo] password for demo: </system_output>
<user_input timestamp="8639.166058">f</user_input>
<user_input timestamp="8639.28305">a</user_input>
<user_input timestamp="8639.342618">i</user_input>
<user_input timestamp="8639.518767">
</user_input>
<system_output timestamp="8639.535761">
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="8639.541877">[?2004hdemo@faiserver:/home/fai$ </system_output>

Answer: 8639.541877, new event