Question:
Which position did Andrés Chadwick hold in May, 2018?

Context:
 Andrés Chadwick holds the position of senator of Chile from Mar, 1998 to Jul, 2011. 
 Andrés Chadwick holds the position of minister Secretary General of Government of Chile from Jul, 2011 to Nov, 2012. 
 Andrés Chadwick holds the position of deputy of Chile from Mar, 1990 to Mar, 1998. 
 Andrés Chadwick holds the position of Interior and Public Security Minister of Chile from Mar, 2018 to Oct, 2019.

Answer:
Interior and Public Security Minister of Chile