Both WEp1 and WEc1 state: "The following landscape types may be included or excluded from landscape calculations: vegetated playgrounds, athletic fields, food gardens, and urban agricultural areas." These types are not defined in the credit language itself; are they defined elsewhere?

I'm particularly interested in knowing what qualifies as a vegetated playground or athletic field. Average hours of use per [day/year/etc.]? Intent of the owner for how the space is used? Presence of permanent play equipment? Thanks for any guidance.