How would one go about concisely wording the sentence "compare X's Y to Z's Y." I've seen it done in a few ways:
- "compare X's Y to Z's Y" (e.g. "compare Mary's lamb to Phillip's lamb")
- "compare X's Y to Z's" (e.g. "compare Mary's lamb to Phillip's")
- "compare X's and Y's Zs" (e.g. "compare Mary's and Phillip's lambs")
However, all three of these sound slightly incorrect to me.