Lesson 09 · Activity 01

Extract & Verify

Extraction is fast but not trustworthy until you check it. Here you'll pull fields from a sample record block into a table, then verify each against the source — and catch the value the AI got wrong.

Work through it

0 of 5 done

Write the extraction instruction you’d give the AI (fields + the "not found" rule).
Read the source records and the AI-extracted table.
Check each row’s values against the source.
Mark which rows hold and which don’t.
Compare to the model answer.

The source records

BIO-101 / Sec 02 / Dr. Reyes / Enrolled: 23 / Online HIST-210 / Sec 01 / Dr. Okafor / Enrolled: 41 / In-person MATH-150 / Sec 04 / Dr. Lindqvist / Enrolled: 18 / Hybrid

Write your extraction instruction

Before you look at the AI’s output, write the instruction you’d give it to pull Course, Section, Instructor, Enrolled, and Modality. Saved on this device.

Your extraction instruction

The AI-extracted table

The AI returned:

Course	Section	Instructor	Enrolled	Modality
BIO-101	02	Dr. Reyes	32	Online
HIST-210	01	Dr. Okafor	41	In-person
MATH-150	04	Dr. Lindqvist	18	Remote

Your verification

For each row, note what you checked and whether it holds. Saved on this device.

Row	What you checked	Holds? (yes/no)
BIO-101
HIST-210
MATH-150

Saved automatically on this device.

Reveal model answer

A strong extraction instruction (copy and adapt):

Extract these fields into a table, one row per section: Course, Section, Instructor, Enrolled, Modality.
Keep values exactly as written — do not reformat or infer.
If a field isn’t present, write "not found".
Add a column noting the source record each row came from.

Then verify the output against the source:

Row	Finding
BIO-101	WRONG — Enrolled should be 23, not 32 (digits transposed).
HIST-210	OK — all fields match.
MATH-150	WRONG — Modality should be "Hybrid," not "Remote" (changed term).

Takeaway: two of three rows had errors that look perfectly clean in the table. Only the check against the source caught them — extraction is a draft until verified.