human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: City / Municipality, No. of s Barangay, District, Area (km²), Population (2010), Income class (2007), ZIP code, Mayor
###Question: What are all the vicinity (km²) where profits magnificence (2007) is 2nd
gpt
SELECT Area (km²) FROM table WHERE Income class (2007) = 2nd