user: Question: What is the full amount of Total Cargo (in Metric Tonnes) where the Code (IATA/ICAO) is pvg/zspd, and the rank is less than 3?
Columns: ['Rank', 'Airport', 'Code (IATA/ICAO)', 'Total Cargo (Metric Tonnes)', '% Change']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'Hong Kong International Airport', 'HKG/VHHH', 4168394.0, '23.2%']
SQL:

assistant: SELECT SUM("Total Cargo (Metric Tonnes)") FROM "Table" WHERE "Code (IATA/ICAO)" = 'pvg/zspd' AND "Rank" < 3.0;