15072
It is mainly found in Cnicus ( " Cnicus benedictus " L. ( " Asteraceae " ) ) , and is present in spotted knapweed plants , where highest and lowest concentrations are found in the leaves ( 0.86 - 3.86 % cnicin ) and stems respectively .
 Cnicus
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:
 Cnicus