Lesson 4: Keeping the context a chunk loses when cut

Module 3 · Lesson 4 · About 50 minutes · Needs: Lessons 1 to 3 of this module (splitters, structure-aware chunks, the evidence check, chunk metadata)

The situation

Lesson 3's variable chunker found all 17 answers, but Kwame noticed two weak spots. Lucy Hart at Brook Street Repairs types "SB-112", and the bulletin's text never says "SB-112": only its title does, and the title is not embedded. And when a chunker cuts finer than sections, the C70 guide's last line, "It takes about 25 minutes.", arrives with no subject.

This lesson follows x01, "how long does descaling the C70 take", and q14, "SB-112", through five fixes. All Hollin data is simulated.