How many teams were at the 2007 details tournament where there a top goalscorer was not awarded?
CREATE TABLE "yearly_basis" (
  "year" text,
  "location" text,
  "number_of_teams" text,
  "player_of_the_tournament" text,
  "top_goalscorer_s" text,
  "best_goalkeeper" text
);
SELECT "number_of_teams" FROM "yearly_basis" WHERE "top_goalscorer_s"='not awarded' AND "year"='2007 details';