「委員長、後は何を運ぶんだっけ？」「得点板と大玉もう一個、綱引きの綱」

「、？」「、」

'Class rep, what else do we need to carry?' 'The scoreboard, another big ball, and the tug-of-war rope.'

Literal

'Committee-chair, rest [topic-は] what [object-を] carry [explanatory reminder-んだっけ]?' 'Scoreboard [and-と] big-ball one-more [counter-個], tug-of-war [of-の] rope.'

School-event preparation dialogue. 委員長 'committee chair' is the standard title for a class representative or student council member. 後は 'the rest' (literally 'after') asks what remains to be done. 得点板, 大玉, and 綱引き are all items associated with 運動会 (school sports day) — an annual Japanese school event featuring specific traditional games and equipment. 大玉 'big ball' refers to a huge fabric ball used in 玉転がし or 大玉送り group games. The response is a noun list, no verb needed.