Assertion: pika's tail | /r/HasProperty | 21 mm
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Source sentences:
text: It has a head-body length of 320 mm (13 in), a tail that is 21 mm (0.83 in), hind feet measuring 71 mm (2.8 in), ears that are 54 mm (2.1 in) (measured from notch to tip), and it weighs an average of 934 grams (32.9 oz).