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_61369 ( "Number" real, "Time" real, "Aircraft" text, "Opponent" text, "Location" text )

### Question ###
What number with the opponent Fokker D.vii have with a time of 1655?

### Accurate SQL ###

SELECT SUM("Number") FROM table_61369 WHERE "Opponent" = 'fokker d.vii' AND "Time" = '1655'