なら

娘(むすめ)：「お父(とう)さん、新聞(しんぶん)ならここにあるよ！」

Daughter: "Dad, the newspaper is here, if you're looking for it!" {if, in case, if it is the case that, if it is true that, as for, on the topic of, if that's the case, if so, that being the case, if possible, if circumstances allow}

大人(おとな)も子(こ)どもも楽(たの)しめるテーマパークならあそこに限(かぎ)る。

If it is a theme park where both adults and children can enjoy, then that place is the best. {if, in case, if it is the case that, if it is true that, as for, on the topic of, if that's the case, if so, that being the case, if possible, if circumstances allow}

父(ちち)：「風邪(かぜ)なら今日(きょう)は学校(がっこう)に行(い)かない方(ほう)がいいんじゃない？」

Father: "If you have a cold, isn't it better not to go to school today?" {if, in case, if it is the case that, if it is true that, as for, on the topic of, if that's the case, if so, that being the case, if possible, if circumstances allow}

メール：「天気(てんき)が悪(わる)くなるようなら、車(くるま)で迎(むか)えに行(い)くから待(ま)っていてね。」

Email: "If the weather gets bad, I'll come pick you up in the car, so please wait." {if, in case, if it is the case that, if it is true that, as for, on the topic of, if that's the case, if so, that being the case, if possible, if circumstances allow}

母(はは)：「幼稚園(ようちえん)に行(い)きたくないの？なら、止(や)めよう。無理(むり)しなくていいのよ。」

Mother: "Don't you want to go to kindergarten? If that's the case, let's stop. You don't have to force yourself." {if, in case, if it is the case that, if it is true that, as for, on the topic of, if that's the case, if so, that being the case, if possible, if circumstances allow}