It is either manchurian pear or Caley's pear. The edge of the leaf of Manchurian pear has pointed small bristle lobes. https://hortflora.rbg.vic.gov.au/taxon/ad95a41e-5340-11e7-b82b-005056b0018f
While the leaf of Caley's Pear has rounded indentations on their edge https://hortflora.rbg.vic.gov.au/taxon/ad959e24-5340-11e7-b82b-005056b0018f
A bit difficult to tell but I think this may be Caley's pear