78506
Human multiple births can occur either naturally ( the woman ovulates multiple eggs or the fertilized egg splits into two ) or as the result of infertility treatments such as in vitro fertilization ( several embryos are often transferred to compensate for lower quality ) or fertility drugs ( which can cause multiple eggs to mature in one ovulatory cycle ) .
 disease: infertility
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: infertility 
Answer:
 disease: infertility