Table: hms_marathon
Columns: name
builder
laid_down
launched
completed

Question: Which builder completed after 1889?
SQL: SELECT "builder" FROM hms_marathon WHERE "completed" > 1889

Question: Which builder completed before 1890 and launched on 9 june 1888?
SQL: SELECT "builder" FROM hms_marathon WHERE "completed" < 1890 AND "launched" = '9 june 1888'

Question: What is the name of the boat that was built by Chatham and Laid down of 25 april 1887?
SQL: SELECT "name" FROM hms_marathon WHERE "builder" = 'chatham' AND "laid_down" = '25 april 1887'

Question: What boat was laid down on 25 april 1887?
SQL: SELECT "name" FROM hms_marathon WHERE "laid_down" = '25 april 1887'

Question: When did chatham complete the Hmsmedusa?
SQL: SELECT "completed" FROM hms_marathon WHERE "builder" = 'chatham' AND "name" = 'hmsmedusa'