Disambiguation evidence for Field of Mars, Saint Petersburg via surface form

"eternal flame at the Field of Mars in Leningrad (as an earlier Soviet eternal flame)"

Triples (1)

Triples where some other subject referred to this entity as "eternal flame at the Field of Mars in Leningrad (as an earlier Soviet eternal flame)".

Eternal Flame at the Tomb of the Unknown Soldier → precededBy →
"eternal flame at the Field of Mars in Leningrad (as an earlier Soviet eternal flame)"
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