user: Question: What was the regular season standings for the year when the playoffs reached the Conference Semifinals and the team Did not qualify for the US Open Cup?
Columns: ['Year', 'League', 'Reg. Season', 'Playoffs', 'US Open Cup', 'Avg. Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1994.0, 'APSL', '1st', 'Semifinals', 'Did not enter', 6347.0]
SQL:

assistant: SELECT "Reg. Season" FROM "Table" WHERE "Playoffs" = 'Conference Semifinals' AND "US Open Cup" = 'Did not qualify';