def when_check(self, node):
""" check if time related PP """
if (node.label() == "PP"):
node_ner = Parse.ner(" ".join(node.leaves()))
time_set = set(["DATE", "TIME"])
if any(t in time_set for t in reduce(operator.concat, node_ner)):
return True
node_leaves = (" ".join(node.leaves())).lower()
if re.search(r'in (.*?) time', node_leaves, re.M | re.I):
return True
return False
