대결이었다

In a sentence

• 그건 정말 치열한 대결이었다.

  It was truly a fierce competition.

  Here, "대결이었다" implies a concluded event, specifically a difficult or intense face-off or competition.

• 우리 팀의 대결이었다, 혜주는 승리했어.

  It was our team's battle, and Hyeju won.

  In this sentence, "대결이었다" refers to a competitive event involving teams, showcasing the past tense usage.

• 마지막 대결이었다, 결과는 여전히 알려지지 않았다.

  It was the final showdown, and the result is still unknown.

  Here, "대결이었다" describes a completion of a concluding event or challenge.