Assertion: ostrich's egg | /r/HasProperty | 13 centimetres
Facets:
Source sentences:
text: The nest may contain 15 to 60 eggs, which are, on average, 15 centimetres (5.9 in) long, 13 centimetres (5.1 in) wide, and weigh 1.4 kilograms (3.1 lb).