<Tr> <Td> 46 </Td> <Td> Palladium </Td> <Td> 0.440 </Td> </Tr> <Tr> <Td> 50 </Td> <Td> Tin </Td> <Td> 1.146 </Td> </Tr> <Tr> <Td> 78 </Td> <Td> Platinum </Td> <Td> 0.417 </Td> </Tr> <Tr> <Td> 80 </Td> <Td> Mercury </Td> <Td> 0.127 </Td> </Tr>

A lead that gives the main information in about 35 words is called what