CREATE TABLE "playoffs" (
  "date" text,
  "visitor" text,
  "score" text,
  "home" text,
  "decision" text,
  "attendance" real,
  "series" text
);

Question: What was the series score when st. louis was away on april 18?
SQL: SELECT "series" FROM "playoffs" WHERE "visitor"='st. louis' AND "date"='april 18';

Question: Who recorded the decision when philadelphia was away?
SQL: SELECT "decision" FROM "playoffs" WHERE "visitor"='philadelphia';