かわ
river
kawa
JMdict 1390020
その川(かわ)はthat river広(ひろ)いwide
The river is wide
その (that) points to a specific river, and は (topic) raises 川(かわ) (river) as the topic — "as for that river…". The i-adjective 広い(ひろい) (wide) works as the whole predicate, so no copula is needed; in plain form it sounds matter-of-fact.
