### CONTEXT (Previous Events):
<system_output timestamp="661.08128">Preparing to unpack .../091-libncurses6_6.4-4_i386.deb ...
</system_output>
<system_output timestamp="661.082119">Unpacking libncurses6:i386 (6.4-4) ...
</system_output>
<system_output timestamp="661.178442">Selecting previously unselected package libnuma1:i386.
</system_output>
<system_output timestamp="661.181662">Preparing to unpack .../092-libnuma1_2.0.16-1_i386.deb ...
</system_output>
<system_output timestamp="661.182842">Unpacking libnuma1:i386 (2.0.16-1) ...
</system_output>
<system_output timestamp="661.227907">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="661.230779">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="661.231328">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="661.280084">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="661.283255">Preparing to unpack .../094-libpcap0.8_1.10.3-1_i386.deb ...
</system_output>
<system_output timestamp="661.284544">Unpacking libpcap0.8:i386 (1.10.3-1) ...
</system_output>
<system_output timestamp="661.352155">Selecting previously unselected package libpcre3:i386.
</system_output>
<system_output timestamp="661.357059">Preparing to unpack .../095-libpcre3_2%3a8.39-15_i386.deb ...
</system_output>
<system_output timestamp="661.357595">Unpacking libpcre3:i386 (2:8.39-15) ...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="661.461473">Selecting previously unselected package libudns0:i386.
</system_output>

Answer: 661.461473, old event