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The initial four plants known to have been domesticated were goosefoot ( " Chenopodium berlandieri " ) , sunflower ( " Helianthus annuus var. macrocarpus " ) , marsh elder ( " Iva annua var. macrocarpa " ) , and squash ( " Cucurbita pepo ssp .
 Helianthus annuus, Iva annua, Cucurbita pepo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Helianthus annuus, Iva annua, Cucurbita pepo