. "2015" . . "Proposed" . . "extension of the IRT Flushing Line" . . "2015" . "extension of the 7 subway service" . "its western extension opened in 2015" . . "extension of the Flushing Line" . "extending" . "7 Subway Extension" . . "7 service" . "western extension" . "extension" . . . . "7 Subway Extension" . "extension of that service" . . "an extension" . "a subway extension of the 7 train" . "extension of the 7 line" . "subway extension" .