Nastassia Marachkouskaya
She competed at the 2008 Olympics and 2012 Summer Olympics in London , United Kingdom , and the 2011 World Artistic Gymnastics Championships . 
<triplet> 2008 Olympics <subj> 2008 <obj> point in time <triplet> 2012 Summer Olympics <subj> 2008 Olympics <obj> follows <triplet> 2011 World Artistic Gymnastics Championships <subj> 2011 <obj> point in time