CREATE TABLE "grammar_and_rules" (
  "trident" text,
  "gecko" text,
  "web_kit" text,
  "khtml" text,
  "presto" text,
  "prince_xml" text
);

Question: For the item that has a Gecko of 'font', what is the KHTML value?
SQL: SELECT "khtml" FROM "grammar_and_rules" WHERE "gecko"='font';

Question: What is the Prince XML value for the engine that has a Gecko value of 'no' and webkit value of 'nightly build'?
SQL: SELECT "prince_xml" FROM "grammar_and_rules" WHERE "gecko"='no' AND "web_kit"='nightly build';

Question: What is the Gecko value for the item that has a Trident value of 'font'?
SQL: SELECT "gecko" FROM "grammar_and_rules" WHERE "trident"='font';

Question: What is the Gecko value for the item that has a Prince XML value of 'no' and a KHTML value of 'yes'?
SQL: SELECT "gecko" FROM "grammar_and_rules" WHERE "prince_xml"='yes' AND "khtml"='yes';

Question: Which Trident version has a Gecko value of 19.0?
SQL: SELECT "trident" FROM "grammar_and_rules" WHERE "gecko"='19.0';

Question: For the item with a Prince XML value of 'font', what is the WebKit value?
SQL: SELECT "web_kit" FROM "grammar_and_rules" WHERE "prince_xml"='font';