Please answer the following question: What key details about alf-gerd deckert can be extracted from the following bio? Bio: alf-gerd deckert -lrb- born 4 july 1955 -rrb- is a retired cross-country skier from east germany . he competed at the 1980 winter olympics in the 15 km , 30 km and 50 km events and finished in 37th , 9th and 26th place , respectively . he was married to petra thumer , a german olympic swimmer . his brother manfred is a retired olympic ski jumper .
A:
- sport is cross-country skiing- birth date is 4 july 1955- club is sc dynamo klingenthal- birth place is halle -lrb- saale -rrb- , germany