"عِنْد جودي جاكيت."
Translation:Judy has a jacket.
The circle above the letter is called a sukun. It means that you stop with just the consonant of the letter without a vowel (for example in this sentence it is just an "n" sound instead of "na"). The other symbol is called a Hamza on top of the letter alif. When a Hamza is on top of a letter (which it can only do with the other vowel letters) it changes the letter to the letter Hamza which sounds almost like alif. Sorry Duolingo doesn't go much into the details