Giving Subrace a choice of 1 melee weapon and one range proficiency

[jbearwillis]

I am wanting to give a subrace 1 choice between these Melee weapons
1) Short Swords
2) Rapiers
And
Also 1 choice between these Ranges weapons
1) Crossbows, Heavy
2)Long Bow
How would I go about doing this, I have found how to give a choice from all weapons, but not from a select few.... Where do I start? Any help is most appreciated.