### CONTEXT (Previous Events):
<system_output timestamp="263.32111">I: Configuring fdisk...
</system_output>
<system_output timestamp="263.36276">I: Configuring libcwidget4:i386...
</system_output>
<system_output timestamp="263.399436">I: Configuring libgssapi-krb5-2:i386...
</system_output>
<system_output timestamp="263.474865">I: Configuring aptitude...
</system_output>
<system_output timestamp="263.534765">I: Configuring whiptail...
</system_output>
<system_output timestamp="263.572815">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="263.607957">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="263.655454">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="263.949114">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="264.222407">I: Configuring isc-dhcp-client...
</system_output>
<system_output timestamp="264.34883">I: Configuring ifupdown...
</system_output>
<system_output timestamp="264.834264">I: Configuring tasksel...
</system_output>
<system_output timestamp="265.022741">I: Configuring tasksel-data...
</system_output>
<system_output timestamp="265.052771">I: Configuring libc-bin...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="265.150298">I: Base system installed successfully.
</system_output>

Answer: 265.150298, new event