Table: list of tallest buildings in portland , oregon
Question: What is the range in height of the tallest buildings in Portland, Oregon?
Step 1 (Operation, Indexing): height feet / m
Step 2 (Reasoning, Other Commonsense Reasoning): range
Step 3 (Reasoning, Aggregating): MAX, height feet / m
Step 4 (Reasoning, Aggregating): MIN, height feet / m
Answer: 185 / 56	-  546 / 166