CREATE TABLE table_58004 ("Singular abbreviation" TEXT, "Singular Word" TEXT, "Plural abbreviation" TEXT, "Plural Word" TEXT, "Discipline" TEXT)

A singular abbreviation of p. is used for what singular word?
SELECT "Singular Word" FROM table_58004 WHERE "Singular abbreviation" = 'p.'
SELECT "Singular Word" FROM "table_58004" WHERE "Singular abbreviation" = 'p.'