r</span> islands <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'Oahu'</span><span class="token punctuation">,</span> <span class="token string">'Kauai'</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
islands<span class="token punctuation">.</span><span class="token function">contains</span><span class="token punctuation">(</span><span class="token string">'Oahu'</span><span class="token punctuation">)</span><sp