I get the translation if I see it written as above, it is obviously interrogative ( a question). However how can one tell just by listening if it is a question or not? It could be, Is it a pineapple? Or it could be, It is a pineapple. The questions marks are not obvious just by listening? Any thoughts?
I put, it is a pineapple and it said correct, but the correct written answer was: Is it a pineapple?
Same way you tell if something is a statement versus a question in English-- the inflection in the voice. Add a question mark at the end of any sentence that doesn't sound like it ought to be a question and give it someone and they will read it with a slightly different inflection in there voice.
"I'm Ron Burgundy" vs "I'm Ron Burgundy?" if you have every seen the movie Anchorman when his teleprompter is changed.
Similarly, have you ever spoken to someone and had to ask "Is that a question or a statement?" If so, it is likely because they spoke in a monotonous way and there was no change in inflection that suggested they were asking but rather stating.
"The name piña colada literally means "strained pineapple", a reference to the freshly pressed and strained pineapple juice used in the drink's preparation. Ramón Portas Mingot is credited with creating the drink. Two Puerto Rican bartenders contest the ownership of their national drink." - Wikipedia