私たちの事務所はその建物の北側にある。

Meaning
our office is on the north side of the building

Vocab used in this sentence

i, my, me, i am, myself, private
たち
we, their, ours, -s, group of
to, of
事務所
office, firm, agency, bureau
a, the, is, am, are, will
その
the, that, its, those
建物
building, structure, premises, edifice
to, of
北側
north side, north bank, north, northern side, kitagawa
in, to, on, at, into, upon
ある
a, is, an, be, there is, to be, locate