What do the question marks in Lego Harry Potter mean?

Some thing that starts with x in the cold war? What is a city with an e? What is the best Phase 10 strategy to increase my chances of winning the game? What are the channels of speech communication? How do you find TM fire blast in diamond? What type of wood is the best for pool cues? What fruits and vegetables begin with S? What are the words for black several languages? What superhero starts with s? How many kids does the game have? What is the Nominating Function? How do you change your head color in stick rpg 2? What partners pool? How many lands should be included in a 3-color commander deck to ensure consistent mana fixing and smooth gameplay? Is there more than one valley fair? What are some popular games played with tiles? Does uthgrob spell anything unscrambled? What is a 6 letter us city ending in n? Where can one buy storage containers for kids' toys? How long has Bakugan existed?