<entry> <ent_seq>2106550</ent_seq> <k_ele> <keb>世界初</keb> </k_ele> <r_ele> <reb>せかいはつ</reb> </r_ele> <trans> <trans_det>world's first</trans_det> <trans_det>first in the world</trans_det> </trans> </entry>