Assertion: grassland's grass | /r/HasProperty | pennisetum purpureum
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Source sentences:
text: In wet tropical regions these types of grasslands may be very dense, such as those in East Africa that are dominated by elephant grass (Pennisetum purpureum) or in New Guinea by pit-pit grass (Miscanthus floridulus), both of which grow 3 metres (9.8 feet) tall.