Delete row mock_seq_0014 from assignment_items

id mock_seq_0014
assignment_id asgn_cn_mock
child_id child_5b46b9f7
item_type single_choice
parent_id
sort_order 14
title 赵州桥不但坚固，而且美观。（ ）
content
status pending
created_at 2026-06-14 08:07:16
updated_at 2026-06-14 08:07:16
major_index
ocr_major_title
major_score 0.0
subject chinese
section
options ["A. 结实，牢固", "B. 坚硬", "C. 坚决地， ...
correct_answer
image_idx 0
page_number 17
score 1.0
extra_content
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