Five business partners, Arnold, Barry, Casper, David and Ernie, each have one son and one daughter. Their families get together often. Consequently, each daughter has married the son of one of the five partners.
- The daughter-in-law of the father of Barry's daughter-in-law has the same mother-in-law as the son-in-law of the father of David's son-in-law.
- The son-in-law of the father of Casper's daughter-in-law is the brother-in-law of David's daughter.
- The daughter-in-law of the father of Arnold's son-in-law is the sister-in-law of Barry's son.
- No daughter-in-law is the husband’s sister.
Who married Ernie's daughter?
