Puzzle 4

Ancient citadel on top of a hill, the __ of Athens.

Became prime minister of Japan in 2012.

Calcium build-up in kettles and domestic pipes.

Guyana's largest river located between two giants.

Involving numbers or expressed as numbers.

Luxury department store with a Swedish name.

One's level of quality expected from others.

Or of relating to digits.

Partner in investment.

Parts of industrial machines that control others.

Sci-fi series about agents Mulder and Scully.

Showy, finger- and palm-waving dance movement.

Sweetener that hasn't been tamed.

The world’s largest species of ursine.

Unsuccessful US supported invasion of Cuba.