<Table> <Tr> <Th_colspan="2"> ALF </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Sitcom Comic science fiction </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Paul Fusco Tom Patchett </Td> </Tr> <Tr> <Th> Starring </Th> <Td> Paul Fusco Max Wright Anne Schedeen Andrea Elson Benji Gregory </Td> </Tr> <Tr> <Th> Theme music composer </Th> <Td> Alf Clausen Tom Kramer </Td> </Tr> <Tr> <Th> Composer (s) </Th> <Td> Alf Clausen </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 99 (original run) 102 (syndication) (list of episodes) </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Executive producer (s) </Th> <Td> Bernie Brillstein Tom Patchett </Td> </Tr> <Tr> <Th> Producer (s) </Th> <Td> Paul Fusco </Td> </Tr> <Tr> <Th> Camera setup </Th> <Td> Multi-camera </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 24 minutes </Td> </Tr> <Tr> <Th> Production company (s) </Th> <Td> Alien Productions Lorimar - Telepictures (1986--89) (seasons 1--3) Lorimar Television (1989--90) (season 4) </Td> </Tr> <Tr> <Th> Distributor </Th> <Td> Warner Bros. Television Distribution </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> NBC </Td> </Tr> <Tr> <Th> Original release </Th> <Td> September 22, 1986 (1986 - 09 - 22)--March 24, 1990 (1990 - 03 - 24) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> ALF </Th> </Tr>

How many seasons did the tv show alf run
find me the text answering this question