Define person and episode keys
Synthetic participant P25 has episode EP1 in period 1 with A and EP2 in period 2 with B. Event EV25 explicitly names EP1 even though it arrives in period 2. Local episode records preserve that link; arrival period does not change event subject. Two permitted episodes are not two unique participants or proof of scientific crossover validity.
| Record | Person/period | Variant/subject |
|---|---|---|
| EP1 | P25/1 | A |
| EP2 | P25/2 | B |
| EV25 | Arrives period 2 | Names EP1 |
Create the supplied period episodes
- Keep P25 identity once
- Keep EP1/EP2 separately
- Read EV25 named episode
- Link EV25 to EP1/A
An event lacking episode evidence remains unresolved where multiple episodes are eligible.
How many participants, episodes and EV25 variant subjects are established?
Show the worked answer
One participant, two episodes, and EV25 belongs to A via EP1. Its arrival in period 2 does not make it a B event.
Match events to their named episode
| Case | Decision or result | Reason |
|---|---|---|
| Count P25 twice as people | Reject | Same participant key |
| Assign EV25 to current EP2 | Reject subject change | Explicit EP1 reference |
Exports include person, period, episode and event-subject columns. A single current-variant field cannot reproduce this history.