Complex sentence: The speech followed by, for the first time in Armenia's history, the introduction of Yerevan United Cheerleaders, who lined up near the tunnel to greet both teams, who entered the field with Ara Gevorgyan's "Artsakh" composition and a spectacular fireworks.
Split into simpler sentences: The speech followed, for the first time in Armenia's history, by the introduction of Yerevan United Cheerleaders, who lined up near the tunnel to greet both teams. The teams entered the field with Ara Gevorgyan's "Artsakh" composition and a spectacular fireworks.