Determine if the sentence is true based on the text below:
Aleksandrov's research was considered important and advanced knowledge of set theory and topology.

Pavel Sergeyevich Alexandrov (Russian: Па́вел Серге́евич Алекса́ндров ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.
OPTIONS:
- Yes
- It's impossible to say
- No
Yes
Bestäm om meningen är sann baserat på texten nedan: Aleksandrovs forskning ansågs viktig och avancerad kunskap om uppsättningsteori och topologi. Pavel Sergejevitj Alexandrov (ryska: Павел Сергеевич Алеревич Аледевич Алеревич Алевевич Меранав), ibland romaniserad Paul Alexandroff eller Aleksandrov (7 maj 1896 – 16 november 1982), var en sovjetisk matematiker. Han skrev omkring trehundra uppsatser, och lämnade viktiga bidrag till uppsättningsteori och topologi. - Ja, det är omöjligt att säga nej.
Determine whether the sentence is true based on the text below: Aleksandrov's research was considered important and advanced knowledge of set theory and topology. Pavel Sergeyevich Alexandrov (Russian: <unk> <unk> <unk> <unk>), sometimes Romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, and made important contributions to set theory and topology. - Yes, it's impossible to say no.
Ja, det är jag.
Yes, I am.