### CONTEXT (Previous Events):
<system_output timestamp="303.810942">Preparing to unpack .../039-dump_0.4b47-4_i386.deb ...
</system_output>
<system_output timestamp="303.811595">Unpacking dump (0.4b47-4) ...
</system_output>
<system_output timestamp="303.922412">Selecting previously unselected package libefivar1:i386.
</system_output>
<system_output timestamp="303.924124">Preparing to unpack .../040-libefivar1_37-6_i386.deb ...
</system_output>
<system_output timestamp="303.939232">Unpacking libefivar1:i386 (37-6) ...
</system_output>
<system_output timestamp="303.967057">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="303.969768">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="303.970337">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="304.001318">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="304.003888">Preparing to unpack .../042-efibootmgr_17-2_i386.deb ...
</system_output>
<system_output timestamp="304.004394">Unpacking efibootmgr (17-2) ...
</system_output>
<system_output timestamp="304.044786">Selecting previously unselected package emacs-el.
</system_output>
<system_output timestamp="304.047527">Preparing to unpack .../043-emacs-el_1%3a28.2+1-15+deb12u3_all.deb ...
</system_output>
<system_output timestamp="304.047777">Unpacking emacs-el (1:28.2+1-15+deb12u3) ...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="307.255891">Selecting previously unselected package emacsen-common.
Preparing to unpack .../044-emacsen-common_3.0.5_all.deb ...
</system_output>

Answer: 307.255891, old event