Table: ect mainline rail
Question: What is the percentage of trains within this table that are currently operated by Nemisis Rail?
Step 1 (Operation, Indexing): notes
Step 2 (Operation, Grouping): notes
Step 3 (Reasoning, Grounding): urrently operated by Nemisis Rail, now operated by nemesis rail
Step 4 (Reasoning, Arithmetic): ratio, now operated by nemesis rail
Answer: 0.25