Assertion: period's element | /r/HasProperty | shared by the use of two calendars
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Source sentences:
text: Although authors such as Michael D. Coe believe that the Mayan culture is completely different from the surrounding cultures, many elements present in Maya culture are shared by the rest of Mesoamerica, including the use of two calendars, the base 20 number system, the cultivation of corn, human sacrifice, and certain myths, such as that of the fifth sun and cultic worship, including that of the Feathered Serpent and the rain god, who in the Yucatec Maya language is called Chaac.