Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of flag bearers for the Soviet Union at the Olympics
Table title:

Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > # </th><th colspan=1 rowspan=1 > Event year </th><th colspan=1 rowspan=1 > Season </th><th colspan=1 rowspan=1 > Flag bearer </th><th colspan=1 rowspan=1 > Sport </th></tr>
<tr> <td colspan=1 rowspan=1 > 18 </td><td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Karelin, AleksandrAleksandr Karelin </td><td colspan=1 rowspan=1 > Wrestling </td></tr>
<tr> <td colspan=1 rowspan=1 > 17 </td><td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Bukin, AndreyAndrey Bukin </td><td colspan=1 rowspan=1 > Figure skating </td></tr>
<tr> <td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > 1984 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Tretyak, VladislavVladislav Tretyak </td><td colspan=1 rowspan=1 > Ice hockey </td></tr>
<tr> <td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Balboshin, NikolayNikolay Balboshin </td><td colspan=1 rowspan=1 > Wrestling </td></tr>
<tr> <td colspan=1 rowspan=1 > 14 </td><td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Tikhonov, AlexanderAlexander Tikhonov </td><td colspan=1 rowspan=1 > Biathlon </td></tr>
<tr> <td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > 1976 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Alekseyev, VasilyVasily Alekseyev </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
<tr> <td colspan=1 rowspan=1 > 12 </td><td colspan=1 rowspan=1 > 1976 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Tretyak, VladislavVladislav Tretyak </td><td colspan=1 rowspan=1 > Ice hockey </td></tr>
<tr> <td colspan=1 rowspan=1 > 11 </td><td colspan=1 rowspan=1 > 1972 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Medved, AleksandrAleksandr Medved </td><td colspan=1 rowspan=1 > Wrestling </td></tr>
<tr> <td colspan=1 rowspan=1 > 10 </td><td colspan=1 rowspan=1 > 1972 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Vedenin, VyacheslavVyacheslav Vedenin </td><td colspan=1 rowspan=1 > Cross-country skiing </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > 1968 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Zhabotinsky, LeonidLeonid Zhabotinsky </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > 1968 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Mamatov, ViktorViktor Mamatov </td><td colspan=1 rowspan=1 > Biathlon </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td class="highlighted"  colspan=1 rowspan=1 > 1964 </td><td colspan=1 rowspan=1 > Summer </td><td class="highlighted"  colspan=1 rowspan=1 > Vlasov, YuryYury Vlasov </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > 1964 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Grishin, YevgenyYevgeny Grishin </td><td colspan=1 rowspan=1 > Speed skating </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td class="highlighted"  colspan=1 rowspan=1 > 1960 </td><td colspan=1 rowspan=1 > Summer </td><td class="highlighted"  colspan=1 rowspan=1 > Vlasov, YuryYury Vlasov </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > 1960 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Sologubov, NikolaiNikolai Sologubov </td><td colspan=1 rowspan=1 > Ice hockey </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > 1956 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Medvedev, AlekseyAleksey Medvedev </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > 1956 </td><td colspan=1 rowspan=1 > Winter </td><td colspan=1 rowspan=1 > Goncharenko, OlegOleg Goncharenko </td><td colspan=1 rowspan=1 > Speed skating </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > 1952 </td><td colspan=1 rowspan=1 > Summer </td><td colspan=1 rowspan=1 > Kucenko, YakovYakov Kucenko </td><td colspan=1 rowspan=1 > Weightlifting </td></tr>
</table>
Question:
Who was the flag bearer for the Soviet Union that appeared in two different years?
Answer:
Yury Vlasov was the only flag bearer for the Soviet Union that appeared in two years, at the Olympics in 1960 and 1964.