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In May 2018 , Liam Neeson joined the cast , while Walter Parkes and Laurie MacDonald will act as producers on the project .
 person: Liam Neeson; person: Walter Parkes; person: Laurie MacDonald
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: Liam Neeson, Walter Parkes, Laurie MacDonald 
Answer:
 person: Liam Neeson; person: Walter Parkes; person: Laurie MacDonald