Table: list of ngc objects (5001 - 6000)
Question: What is the standard deviation of the apparent magnitude of objects in the constellation Canes Venatici?
Step 1 (Operation, Indexing): constellation
Step 2 (Operation, Filter): canes venatici
Step 3 (Operation, Indexing): apparent magnitude
Step 4 (Reasoning, Aggregating): STD, apparent magnitude
Answer: 2.260