text: One painting from this artist's "mythomorphic" period depicts a pair of sinuous abstract creatures on abeige background.
full_question: One painting from this artist's "mythomorphic" period depicts a pair of sinuous abstract creatures on abeige background. Late in life, this artist suffered an aortic aneurysm which restricted him to creating smallerworks on stretched paper, which he claimed were "about death" and eschewed bright colors. Fourteen blackhuedpaintings by this artist of Slow Swirl At The Edge Of The Sea can be found in a building fronted by BarnettNewman's Broken Obelisk. This artist, who pulled out of a commission to decorate the Seagram Building,painted many artworks that adorn a namesake Houston chapel. For 10 points, name this Latvian-Americanartist of paintings such as Black on Gray and Four Darks in Red that pioneered Color Field painting. 
first_sentence: One painting from this artist's "mythomorphic" period depicts a pair of sinuous abstract creatures on abeige background.
raw_answer: Mark Rothko [or Markus Yakovlevich Rotkovich] 