### CONTEXT (Previous Events):
<system_output timestamp="4229.148647">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               79% 1510MB  35.7MB/s   00:11 ETA</system_output>
<system_output timestamp="4230.148673">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               81% 1542MB  35.4MB/s   00:10 ETA</system_output>
<system_output timestamp="4231.148677">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               82% 1575MB  35.1MB/s   00:09 ETA</system_output>
<system_output timestamp="4232.148746">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               84% 1611MB  35.2MB/s   00:08 ETA</system_output>
<system_output timestamp="4233.148766">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               86% 1642MB  34.8MB/s   00:07 ETA</system_output>
<system_output timestamp="4234.14872">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="4235.148883">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="4236.148848">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="4237.343746">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="4238.343592">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               93% 1772MB  30.7MB/s   00:04 ETA</system_output>
<system_output timestamp="4239.343553">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               94% 1802MB  30.6MB/s   00:03 ETA</system_output>
<system_output timestamp="4241.408114">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               96% 1830MB  28.9MB/s   00:02 ETA</system_output>
<system_output timestamp="4249.274024">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                               97% 1864MB  26.4MB/s   00:01 ETA</system_output>
<system_output timestamp="4250.238512">
fai_cd.iso                                                                                                                                                                                                                                                                                                                                                                                              100% 1903MB  30.2MB/s   01:03    
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="4250.247978">[?2004hdemo@stephost:~$ </system_output>

Answer: 4250.247978, new event