#!/usr/bin/python3

import json
import sys

filename = sys.argv[1]
probe = sys.argv[2]

f = open(filename)
for line in f.readlines():
    data = json.loads(line)
    mid = data["msm_id"]
    for p in data["probes"]:
        if str(p["id"]) == probe:
            print("Measurement %s uses the probe %s" % (mid, probe))