It took us two office hours to get this! In the beginning of our second, he asked us straight out -- "wait, stop selling me. What's the problem you're trying to solve here?"
Going with six ears helped too -- we'd always debrief after the office hours, and talk about what he said, and none of us had the full picture. The dude talks fast and covers a lot of ground!
Correcting you: I got the impression pg wants to know exactly who will be your customer and what problem you're solving. He asked that again and again. (saying what problem you're solving is not marketing talk)
Ah, perhaps I should have phrased that better. What I meant to say was:
For pg's office hours, you should strip away all the buzz words and describe your business (customer, market, etc) in words someone outside of this industry would understand.
Basically, I got the feeling he was trying to pare away buzz words.
That's why I thought that a bad answer to pg asking "how did users find you?" is what the guy from the graph db gave him, "because we are the easiest!". Total marketing talk.
For investors, your pitch should include the problem you're trying to solve, the people who have this problem, and your solution.
For pg's office hours, you should strip away all that marketing talk and just say what it is in it's most barest technical essentials.