For this query, we used a CSV from that covers grain prices over 100 years. We add the CSV as a resource, and use dump and compound queries to create a parsable date field, put the data into temporal mode, and chart corn prices over 100 years! 🌽

dump -r feedgrain SC_Frequency_ID==1 SC_GeographyIndented_Desc=="United States" SC_Group_Desc==Prices SC_GroupCommod_Desc==Corn
| eval setEnum("Date", Year_ID+"-"+Timeperiod_Desc)
dump -r @date -t Date -f "2006-Jan" | chart Amountdump -r @date -t Date -f "2006-Jan" | chart Amount

Additional information available at