WHILE USING OPTION FILTER I AM GETTING BELOW RESULTS WHICH IS I AM EXPECTED

CODE:
{
"jsonrpc": "2.0",
"method": "item.get",
"params": {
"output": "itemid",
"filter":

{ "host": [ "RADNETMR1549_MR_UTCM5_USA", "580548BWB_MR_UTCM5_USA", "253219RMR_MR_UTCM5_USA", "410955MR6_MR_UTCM5_USA" ] }

,
"sortfield": "name",
"limit": 10
},
"auth": "e5e895c3e27d7bda14655862ba2c2234",
"id": 1
}

OUTPUT:
{
"jsonrpc": "2.0",
"result": [

{ "itemid": "92991", "name": "ICMP loss" }

,

{ "itemid": "93152", "name": "ICMP loss" }

,

{ "itemid": "93159", "name": "ICMP loss" }

,

{ "itemid": "93166", "name": "ICMP loss" }

,

{ "itemid": "92990", "name": "ICMP ping" }

,

{ "itemid": "93151", "name": "ICMP ping" }

,

{ "itemid": "93158", "name": "ICMP ping" }

,

{ "itemid": "93165", "name": "ICMP ping" }

,

{ "itemid": "92992", "name": "ICMP response time" }

,

{ "itemid": "93153", "name": "ICMP response time" }

],
"id": 1
}