Between 1901 and 1904 Which painter's career was described as his 'Blue period' ?
between 1901 and 1904 which painter's career was described as his 'blue period' 
FreebaseQA-train-2910.P0
blue period
picasso's blue period
m.072333
visual_art.art_period_movement.associated_artists
m.060_7
pablo picasso