Feature Request: Allowing for alternatives

[mwoodsy]

When comparing strings it would be nice to allow for equivalent or alternative words. For example:

Hi, This is Ann.
Hi, This is Anne.

The cost is 21 dollars
The cost is $21.00 dollars
The cost is $21
The cost is twenty one dollars

I'm going to go for a walk
I'm gonna go for a walk

could all be equivalent

A method to implement something like this could be to allow for something like this syntax [], for example:

a = "Hi this is Ann I'm going to go for a walk"
b = "Hi this is [Anne|Ann|An] [I'm|I am] [going to|gonna] go for a walk"

distance(a,b) #returns 0