ElasticSearch: query_string vs text queries

gistfile1.bash

curl -XDELETE http://localhost:9200/ac-test
curl -XPUT http://localhost:9200/ac-test
curl -XPUT http://localhost:9200/ac-test/people/1 -d '
{
  "firstNames" : "James Earl",
  "lastName" : "Jones",
  "location" : "Hollywood, CA"
}'

curl -XPUT http://localhost:9200/ac-test/people/2 -d '
{
  "firstNames" : "Earl",
  "lastName" : "Grey",
  "location" : "London, UK"
}'

curl -XPUT http://localhost:9200/ac-test/people/3 -d '
{
  "firstNames" : "James Maxwell",
  "lastName" : "Earl",
  "location" : "Portland, OR"
}'

curl -XPOST 'http://localhost:9200/ac-test/_refresh'

echo 'We expect 2 hits from this'
curl -XPOST http://localhost:9200/ac-test/people/_search -d '
{
    "query" : {
        "query_string" : {
            "fields": ["firstNames","lastName","location"],
            "query":"James Earl",
            "default_operator" : "AND"
        }
    }
}
'

echo 'We expect 1 hit from this'
curl -XPOST http://localhost:9200/ac-test/people/_search -d '
{
    "query" : {
        "query_string" : {
            "fields": ["firstNames","lastName","location"],
            "query":"\"James Earl\"",
            "default_operator" : "AND"
        }
    }
}
'

echo 'We expect 1 hit from this'
curl -XPOST http://localhost:9200/ac-test/people/_search -d '
{
    "query" : {
        "query_string" : {
            "fields": ["firstNames","lastName","location"],
            "query":"James Portland",
            "default_operator" : "AND"
        }
    }
}
'

echo And this errors...
curl -XPOST http://localhost:9200/ac-test/people/_search -d '
{
    "query" : {
        "query_string" : {
            "fields": ["firstNames","lastName","location"],
            "query":"\"James Maxwell\" Portland, OR",
            "default_operator" : "AND"
        }
    }
}
'

# In order to fix the error, we could use a text query. But what are the equivalent queries using a text query?

# If the purpose of the text query is to meet the needs of a search box used by the general public, wouldn't this be a better interface?
# curl -XPOST http://localhost:9200/ac-test/people/_search -d '
# {
#     "query" : {
#         "text" : {
#             "fields": ["firstNames","lastName","location"],
#             "query":"\"James Maxwell\" Portland, OR",
#             "default_operator" : "AND"
#         }
#     }
# }
# '