Investors & landlords

Working on my AZ tax return and also a bit confused by this.  Hoping someone can help.

Example scenario:  
You have a total net long term capital gain of $1500    What is the portion for assets acquired after Dec 31, 2011?
 

Based on the math, it appears that capital gain distributions are also factored into this figure (for which acquisition dates are not available, so should not be included in the input figure based on research I've done).

And the NET gain/loss from the sale of assets is a NET of several different transactions, all with assets with different acquisition dates.  

 

So my net long-term capital gain of $1500 could be made up of:
$1700 capital gains distribution (no acquisition dates available)

$800 LT gain (assets before Dec 31, 2011)
-$1000 LT loss (assets after Dec 31, 2011)

 

What would I enter?