"He is inside the house."
Translation:Aia ʻo ia i loko o ka hale.
jdmcowan, thanks for the response. However, I meant more specifically in this exercise's sentence where they are both single words without any proceeding letters.
The effect crosses spaces. At the end of Aia, cut off the last a sound before starting the ‘o. But at the end of loko, hold the last o into the word o, so it sounds like one long o. In isolation, I don't believe you can tell the difference - there has to be a preceding vowel to get cut off or not for you to tell the difference.