Suppose for a moment that you did understand {zi'o catra ko'a} to mean "ko'a dies". Then that bridi doesn't say whether or not somebody killed ko'a.
In this instance, you can equally well say {ko'a mrobi'o}, to talk about dying. But how do we talk about bottles and tigers in general, rather than lidded bottles and striped tigers in particular?
-- lojbab lojbab@lojban.org Bob LeChevalier, President, The Logical Language Group, Inc. 2904 Beau Lane, Fairfax VA 22031-1303 USA 703-385-0273 Artificial language Loglan/Lojban: http://www.lojban.org