53061
While it has been a common belief that breastfeeding causes breasts to sag , researchers have found that a woman 's breasts sag due to four key factors : cigarette smoking , number of pregnancies , gravity , and weight loss or gain .
 disease: sag
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: sag 
Answer:
 disease: sag