CREATE TABLE "see_also" (
  "name" text,
  "country" text,
  "year" real,
  "structure_height_m" text,
  "structure_volume_10_6_m_3" text,
  "reservoir_volume_10_9_m_3" real,
  "type" text
);

Question: What is the height of the fort peck dam which was built before 1968, is located in the united states and has a dam type of TE ?
SQL: SELECT "structure_height_m" FROM "see_also" WHERE "year"<1968 AND "type"='te' AND "country"='united states' AND "name"='fort peck dam';