user: Question: How many people boarded and de-boarded the Amtrak in linthicum?
Columns: ['Rank', 'Station', 'City', 'State', 'Boardings and deboardings']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Penn Station', 'New York City', 'New York', 8995551.0]
SQL:

assistant: SELECT SUM("Boardings and deboardings") FROM "Table" WHERE "City" = 'linthicum';