Grains end higher in impressive fashion and after a mostly lower start. Matt Bennett, AgMarket.Net, says the market has been resilient as the funds are exiting shorts and taking profits end of quarter. How long will they continue to buy after that?  China demand news and Brazil weather concerns have also contributed to the rally but he says it may be hard to sustain during harvest.  If the market does stay strong there may be some other underlying bullish factor that hasn't played out yet.  Cattle continue to look technically strong and have gotten a push from the stock market but Bennett says he is not sure if the funds will be willing to push the long side much farther.