请提供五个典型的好莱坞明星的名字，必须包含他们的全名和出生年份。用json格式输出
user
{
 "stars": [
 {
 "full_name": "Tom Hanks",
 "birth_year": 1956
 },
 {
 "full_name": "Meryl Streep",
 "birth_year": 1949
 },
 {
 "full_name": "Leonardo DiCaprio",
 "birth_year": 1974
 },
 {
 "full_name": "Jennifer Lawrence",
 "birth_year": 1990
 },
 {
 "full_name": "Brad Pitt",
 "birth_year": 1963
 }
 ]
}
assistant