Assertion: monarch's wing | /r/HasProperty | marked by black veins
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Source sentences:
text: WHEREAS, The monarch butterfly, known to scientists as "Danaus plexippus," is a familiar and thrilling sight to Texans who play host to this beautiful insect each year as it travels southward toward the equator; its distinctive rust-colored wings, marked by black veins and two rows of white spots, make the monarch butterfly instantly recognizable to all; and