 punctuation matters. Let's call Grandma means I want that you want you to help me to make a phone call to our grandmother. Let's call Grandma means I'm talking to Grandma. This sign says that three things are not allowed. There is no smoking food. There is no drinks photography and there is no pets. This sign says women's way. Unfortunately, women's is already plural so you cannot add another S without an apostrophe. This sign says there is one halibut taco and the halibut taco has flour tortilla filled with fresh halibut, mayonnaise, lettuce, and pico de gallo. I think they mean there's more than one halibut taco though. It should be plural. Andy's barber shop is correct. This is the barber shop that belongs to Andy. But let's look at the blue sign. Barber's shop. This means that more than one barber goes out to buy things. This is a very strange question. Do you have a library card? Because I'd like to check you out. This sign has two mistakes. Fire. It will swallow everything in it is way. Only we pretend not real firefighters can stand up to it. Be very careful with your punctuation because it does make a difference.