### CONTEXT (Previous Events):
<system_output timestamp="1587.231054">Preparing to unpack .../030-discover_2.1.2-10_i386.deb ...
</system_output>
<system_output timestamp="1587.234243">Unpacking discover (2.1.2-10) ...
</system_output>
<system_output timestamp="1587.27564">Selecting previously unselected package libdevmapper-event1.02.1:i386.
</system_output>
<system_output timestamp="1587.278479">Preparing to unpack .../031-libdevmapper-event1.02.1_2%3a1.02.185-2_i386.deb ...
</system_output>
<system_output timestamp="1587.279253">Unpacking libdevmapper-event1.02.1:i386 (2:1.02.185-2) ...
</system_output>
<system_output timestamp="1587.307772">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="1587.310408">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="1587.310881">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="1587.336746">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="1587.339649">Preparing to unpack .../033-liblvm2cmd2.03_2.03.16-2_i386.deb ...
</system_output>
<system_output timestamp="1587.339903">Unpacking liblvm2cmd2.03:i386 (2.03.16-2) ...
</system_output>
<system_output timestamp="1587.517184">Selecting previously unselected package dmeventd.
</system_output>
<system_output timestamp="1587.519939">Preparing to unpack .../034-dmeventd_2%3a1.02.185-2_i386.deb ...
</system_output>
<system_output timestamp="1587.520242">Unpacking dmeventd (2:1.02.185-2) ...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="1587.56156">Selecting previously unselected package libdmraid1.0.0.rc16:i386.
</system_output>

Answer: 1587.56156, old event