Olga Vladimirovna Litvinenko (Ольга Владимировна Литвиненко, born 1983) is a Russian ex-politician and the daughter of Vladimir Litvinenko, a close friend of Vladimir Putin's and in the words of Olga, "the richest rector in Russia" and an "oligarch". Olga has accused her father of kidnapping her daughter.

Based on the paragraph above can we conclude that "Olga knows putin because they attended a meeting together before"?
It's impossible to say