### CONTEXT (Previous Events):
<system_output timestamp="868.109473">Get: 77 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 icu-devtools i386 72.1-3 [214 kB]
</system_output>
<system_output timestamp="868.139522">Get: 78 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libicu-dev i386 72.1-3 [10.6 MB]
</system_output>
<system_output timestamp="868.271675">Get: 79 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libxml2-dev i386 2.9.14+dfsg-1.3~deb12u1 [846 kB]
</system_output>
<system_output timestamp="868.281481">Get: 80 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libxt-dev i386 1:1.2.1-1.1 [419 kB]
</system_output>
<system_output timestamp="868.286818">Get: 81 http://127.0.0.1:3142/ftp.de.debian.org/debian bookworm/main i386 libmagickcore-6.q16-dev i386 8:6.9.11.60+dfsg-1.6+deb12u2 [1,200 kB]
</system_output>
<system_output timestamp="868.299464">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="868.300995">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="868.375623">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="868.422446">... [TRUNCATED TO SAVE SPACE] ...</system_output>
<system_output timestamp="868.684054">Building dependency tree...
</system_output>
<system_output timestamp="868.685635">Reading state information...
</system_output>
<system_output timestamp="868.886477">Reading extended state information...
</system_output>
<system_output timestamp="868.907746">Initializing package states...
</system_output>
<system_output timestamp="870.007802">Writing extended state information...
</system_output>

### TARGET LINE (Extract and Classify THIS Timestamp):
<system_output timestamp="870.263653">Building tag database...
</system_output>

Answer: 870.263653, old event