If the home team is UMBC and the weight is 78kg, what the the name total number?
CREATE TABLE "roster" (
  "name" text,
  "position" text,
  "height" text,
  "weight" text,
  "date_of_birth" text,
  "home_team" text
);
SELECT COUNT("name") FROM "roster" WHERE "weight"='78kg' AND "home_team"='UMBC';