Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_2207 ( "ILO code" text, "Field" text, "conclusion date" text, "entry into force" text, "closure for signature" text, "Parties (April 2011)" real, "Denunciations (September 2011)" real, "revising convention(s)" text, "text and ratifications" text )

### Question ###
How many inputs are there in the 'closure for signature' tab under the field 'sea (revised)'?

### Accurate SQL ###

SELECT COUNT("closure for signature") FROM table_2207 WHERE "Field" = 'Sea (revised)'