66049
Tycho Brahe 's improved instruments made precise observations of the skies ( 1576 – 1601 ) , and from these Johannes Kepler ( 1621 ) deduced that planets orbited the Sun in ellipses .
 person: Tycho Brahe; person: Johannes Kepler
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: Tycho Brahe, Johannes Kepler 
Answer:
 person: Tycho Brahe; person: Johannes Kepler