Question:
Who was the head coach of the team Feyenoord in Feb, 2019?

Context:
 Jaap Stam is the head coach of Feyenoord from Jun, 2019 to Oct, 2019. 
 Dick Advocaat is the head coach of Feyenoord from Oct, 2019 to May, 2021. 
 Giovanni van Bronckhorst is the head coach of Feyenoord from May, 2015 to May, 2019. 
 Arne Slot is the head coach of Feyenoord from Jul, 2021 to Dec, 2022.

Answer:
Giovanni van Bronckhorst