Author, musician and radio personality Garrison Keillor once wrote that in Lake Wobegone, Minn., the women are strong, the men are good looking and all the children are above average. Apparently at Wolf Trap, the wolves speak fluent English and raise homeless liberals to become hosts of shows on public radio – or so we are led to believe. This was one of Keillor’s many jokes on “A Prairie Home Companion” at Wolf Trap on Saturday. Keillor is a legend in public radio, and Saturday’s sold out performance/live broadcast drew in crowds from as far as Harrisburg, Pa. For those of you who have never listened to the show, which is broadcast on Washington’s WETA, it’s family-friendly, folksy fun with a message.