homeport has_docked_at boatname home name port Serenity Plymouth Endeavour Poole Adagio Dover Endeavour Dover Endeavour Dover Endeavour Plymouth Serenity Plymouth Serenity Portsmouth Adagio Dover Adagio Plymouth (a) For the following SQL query, give the table returned by the query. SELECT home, boatname FROM homeport CROSS JOIN has_docked at WHERE home = port AND boatname = name; (b) Write the request that the above query is answering