Table: e! (canadian tv system)
Question: What was the average number of years between a TV station's affiliation with the e! Canadian TV system and their eventual disaffiliation?
Step 1 (Operation, Indexing): year of disaffiliation
Step 2 (Operation, Indexing): year of affiliation
Step 3 (Reasoning, Arithmetic): -, years between a TV station's affiliation
Step 4 (Reasoning, Aggregating): AVG, number of years
Answer: 6.2