They allowed what was short term singular problems (the act of illegal immigration) fester into a complex entrenched problem.

I just find it hard to find a singular definition of a co-host.

That's a hard one to answer because my "singular" specialty/strategy of the moment is multi-strategy. 

@Joe S. to piggy-back on what @Nathan Gesner said; Military tenants and military life is not a singular thing, there is active duty, active reserve, lot's of variety in MOS and duty station, on and on. 

So there is a singular point of contact who's active and not a need to wrangle a whole group for every everything. 

Any members who want to invest can do so (minimum $5K), and we form a joint venture LLC as the singular investor (the limited partner) in that syndication deal.

This way, you insulate yourself from any singular bad deal taking down your entire empire you are building. 

Are you raising money for a singular project, or do you have some set of investment parameters for projects for which you're raising money?

But it's hard to lend a singular #.

Although in most cases, the plaintiff's counsel doesn't even care because they are singularly concerned with what insurance may be available.